title: Abnormal and normal obsessions.
mesh_terms: D000293:Adolescent; D000328:Adult; D003192:Compulsive Behavior / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009770:Obsessive Behavior / Q000523:psychology*; D011599:Psychopathology