Childhood obsessive-compulsive disorder is a chronic and commonly disabling
disorder with a lifetime prevalence of 2% to 3%. Obsessive-compulsive diso
rder in childhood is relatively similar to the disorder in adulthood in ter
ms of prevalence, phenomenology, etiology, and response to treatment. Comor
bidity, most notably depression and other anxiety disorders, is common in c
hildren and may complicate treatment and long-term outcome. Nevertheless, c
ognitive-behavioral and selective serotonin reuptake inhibitor therapy have
been shown to be effective and well tolerated in this age range.