December 01, 2020; 95 (22) Views & Reviews
Idiopathic distal sensory polyneuropathy
ACTTION diagnostic criteria
View ORCID ProfileRoy Freeman, View ORCID ProfileJennifer S. Gewandter, Catharina G. Faber, View ORCID ProfileChristopher Gibbons, View ORCID ProfileSimon Haroutounian, View ORCID ProfileGiuseppe Lauria, Todd Levine, Rayaz A. Malik, J. Robinson Singleton, A. Gordon Smith, Josh Bell, View ORCID ProfileRobert H. Dworkin, View ORCID ProfileEva Feldman, David N. Herrmann, View ORCID ProfileAhmet Hoke, View ORCID ProfileNoah Kolb, Heikki Mansikka, View ORCID ProfileAnne Louise Oaklander, View ORCID ProfileAmanda Peltier, View ORCID ProfileMichael Polydefkis, Elissa Ritt, James W. Russell, Stephen Sainati, Deborah Steiner, View ORCID ProfileRoi Treister, View ORCID ProfileNurcan Üçeyler
First published October 14, 2020, DOI: https://doi.org/10.1212/WNL.0000000000010988
Roy Freeman
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Jennifer S. Gewandter
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Catharina G. Faber
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Christopher Gibbons
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Simon Haroutounian
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Giuseppe Lauria
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Todd Levine
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Rayaz A. Malik
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
J. Robinson Singleton
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
A. Gordon Smith
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Josh Bell
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Robert H. Dworkin
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Eva Feldman
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
David N. Herrmann
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Ahmet Hoke
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Noah Kolb
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Heikki Mansikka
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Anne Louise Oaklander
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Amanda Peltier
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Michael Polydefkis
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Elissa Ritt
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
James W. Russell
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Stephen Sainati
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Deborah Steiner
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Roi Treister
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Nurcan Üçeyler
From the Beth Israel Deaconess Medical Center (R.F., C.G.), Harvard Medical School, MA; University of Rochester Medical Center (J.S.G., R.H.D., D.N.H.), Rochester, NY; Department of Neurology (C.G.F.), School of Mental Health and Neuroscience, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Anesthesiology (S.H.), Washington University in St. Louis School of Medicine, St. Louis, MO; Neuroalgology Unit (G.L.), Fondazione IRCCS Istituto Neurologico “Carlo Besta,” Milan, Italy; Department of Biomedical and Clinical Sciences “Luigi Sacco” (G.L.), University of Milan,Milan, Italy; Phoenix Neurological Associates (T.L.), Phoenix, AZ; Weill Cornell Medicine-Qatar (R.A.M.), Qatar Foundation, Education City, Doha, Qatar; University of Utah (J.R.S.), Salt Lake City, UT; Virginia Commonwealth University (A.G.S.), Richmond, VA; Biogen (J.B.), Cambridge, MA; University of Michigan (E.F.), Ann Arbor, MI; Johns Hopkins School of Medicine (A.H., M.P.), Baltimore, MD; University of Vermont (N.K.), Burlington, VT; Chromocell Corp (H.M.), North Brunswick, NJ; Harvard Medical School (A.L.O.), Boston, MA; Departments of Neurology and Medicine (A.P.), and Vanderbilt Heart and Vascular Institute, Nashville, TN; NuFactor Specialty Pharmacy (E.R.), Temecula, CA; University of Maryland (J.W.R.), Baltimore, MD; Aptinyx (S.S.), INC., Evanston. IL; Amgen (D.S.), Cambridge, MA; University of Haifa (R.T.), Haifa, Israel; and University of Würzburg (N.Ü.), Würzburg, Germany.
Idiopathic distal sensory polyneuropathy
ACTTION diagnostic criteria
Roy Freeman, Jennifer S. Gewandter, Catharina G. Faber, Christopher Gibbons, Simon Haroutounian, Giuseppe Lauria, Todd Levine, Rayaz A. Malik, J. Robinson Singleton, A. Gordon Smith, Josh Bell, Robert H. Dworkin, Eva Feldman, David N. Herrmann, Ahmet Hoke, Noah Kolb, Heikki Mansikka, Anne Louise Oaklander, Amanda Peltier, Michael Polydefkis, Elissa Ritt, James W. Russell, Stephen Sainati, Deborah Steiner, Roi Treister, Nurcan Üçeyler
Neurology Dec 2020, 95 (22) 1005-1014; DOI: 10.1212/WNL.0000000000010988
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Abstract
Objective To present standardized diagnostic criteria for idiopathic distal sensory polyneuropathy (iDSP) and its subtypes: idiopathic mixed fiber sensory neuropathy (iMFN), idiopathic small fiber sensory neuropathy (iSFN), and idiopathic large fiber sensory neuropathy (iLFN) for use in research.
Methods The Analgesic, Anesthetic, and Addiction Clinical Trial Translations, Innovations, Opportunities and Networks (ACTTION) public-private partnership with the Food and Drug Administration convened a meeting to develop consensus diagnostic criteria for iMFN, iSFN, and iLFN. After background presentations, a collaborative, iterative approach was used to develop expert consensus for new criteria.
Results An iDSP diagnosis requires at least 1 small fiber (SF) or large fiber (LF) symptom, at least 1 SF or LF sign, abnormalities in sensory nerve conduction studies (NCS) or distal intraepidermal nerve fiber density (IENFD), and exclusion of known etiologies. An iMFN diagnosis requires that at least 1 of the above clinical features is SF and 1 clinical feature is LF with abnormalities in sensory NCS or IENFD. Diagnostic criteria for iSFN require at least 1 SF symptom and at least 1 SF sign with abnormal IENFD, normal sensory NCS, and the absence of LF symptoms and signs. Diagnostic criteria for iLFN require at least 1 LF symptom and at least 1 LF sign with normal IENFD, abnormal sensory NCS, and absence of SF symptoms and signs.
Conclusion Adoption of these standardized diagnostic criteria will advance research and clinical trials and spur development of novel therapies for iDSPs.
Glossary
- CCM=
- corneal confocal microscopy;
- iDSP=
- idiopathic distal sensory polyneuropathy;
- IENFD=
- intraepidermal nerve fiber density;
- iLFN=
- idiopathic large fiber sensory neuropathy;
- iSFN=
- idiopathic small fiber sensory neuropathy;
- LF=
- large fiber;
- NCS=
- nerve conduction studies;
- QST=
- quantitative sensory testing;
- SF=
- small fiber
Footnotes
Go to Neurology.org/N for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.
Roy Freeman and Jennifer S. Gewandter are co–first authors.
↵* These authors contributed equally to this work as co-first authors.
Podcast: NPub.org/3cv4m2
- Received June 10, 2020.
- Accepted in final form September 21, 2020.
- © 2020 American Academy of Neurology
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