Do soft signs predict treatment outcome in obsessive-compulsive disorder?

The authors examined 21 outpatients with obsessive-compulsive disorder for five neurological soft signs and abnormalities on two neuropsychological tests before and after 10 to 12 weeks of treatment with serotonin reuptake inhibitors. Patients showed a mean of 1.8 soft signs. Prevalences were finger-to-finger, 10%; adventitious movements, 29%; mirror movements, 33%; impaired cube drawing, 33%; and agraphesthesia, 76%. The Stroop Color and Word Test was abnormal in 10% and the Controlled Oral Word Association Test was abnormal in 14% of patients. Neither the presence of specific soft signs, the number of signs present, nor a combination of signs and test abnormalities predicted a poorer response to pharmacological treatment. Some baseline soft signs and abnormalities disappeared at endpoint in medication responders and nonresponders; no clear pattern of change emerged.