Table 3.

Number of patients with semantic dementia and progressive nonfluent aphasia (PA) that had selected features

CharacteristicSemantic dementia (n = 8)PA (n = 3)
Age at onset <65 y53
Family history21
Social conduct disorder50
Personal conduct disorder51
Emotional blunting51
Impaired insight51
Mental rigidity41
Decline in hygiene40
Alterations in diet21
Stereotyped behavior42
Utilization behavior00
Narrowed preoccupations40
Severe amnesia30
Impairment on frontal lobe tests31
Clinical perceptual difficulties20