Neurological soft signs in obsessive-compulsive disorder: The effect of co-morbid psychosis and evidence for familiality

► Examine the NSS in patients with OCD alone and co-morbid with psychosis. ► Examine the prevalence of NSS in unaffected siblings of OCD patients. ► Findings suggest that OCD patients exhibit more NSS than healthy controls. ► Some of the NSS may be indicative of a vulnerability to OCD.