Psycology) paper on Obsessive Cumpulsive Disorder

This is a psycology paper on Obsessive Cumpulsive Disorder (OCD)

Begin by describing the disorder
-symptoms, prevalence, typical onset
Describe biological, psychodynamic, behavioral, and cognitive theories regarding etiology
Describe 2-3 proven effective treatments
Paper should be 5 pages in length (not including references, paper should also be in apa style)

You must find at least 4 published journal articles which describe treatments for the disorder
The information you use from the articles must be cited in APA format; avoid direct quotes, paraphrase