Obsessions and phobias.
D001521:Behavior Therapy; D002675:Child, Preschool; D006801:Humans; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000628:therapy*; D010698:Phobic Disorders / Q000628:therapy*; D011574:Psychoanalytic Theory; D011613:Psychotherapy