Several mental health disorders are caused by both psychological and biological problems. Many of these are anxiety or behavioral disorders. Obsessive compulsive disorder (OCD) is one such disorder that represents both anxiety and behavioral problems. Its causes can be psychological, biological or, in most cases, both. Many studies have been conducted on OCD and show that it is a complex disorder with many different symptoms. Treatments and medications have been used to reduce symptoms and help people overcome the disorder. OCD is an anxiety disorder that causes a lot of stress to people who suffer from it, however with proper treatment those who suffer from it can live a healthy and normal life. Obsessive compulsive disorder is a neuropsychiatric disorder, characterized by two main events: obsessions and compulsions (Thomsen, 2012). Obsessions are recurring, unwanted, or intrusive thoughts or images, while compulsions are repetitive actions or behaviors (Subramaniam, Soh, Vaingankar, Picco, & Chong, 2013; Murphy, Moya, Fox, Rubenstein, Wendland, & Timpano, 2013). These repetitive thoughts and rituals cause stress and anxiety to the person suffering from the disorder. Obsessions and compulsions are often extreme and irrational, which is often known to patients (Murphy, Moya, Fox, Rubenstein, Wendland, & Timpano, 2013). However, although it is known that they are not necessary, the patient finds it difficult and sometimes impossible to resist the thoughts and actions (Murphy, Moya, Fox, Rubenstein, Wendland, & Timpano, 2013). These two symptoms are the main and only symptoms of OCD. Although OCD has only two main characteristics, there are several subsets of the disorder. ...... half of article ......n, W. K., Cicchetti, D., & Leckman, J. F. (1997). Obsessive-compulsive scale for children: Reliability and validity. The American Academy of Child and Adolescent Psychiatry, 36(6), 844-852. Starcevic, V., & Brakoulias, V. (2008). Symptom subtypes of obsessive-compulsive disorder: are they relevant to treatment?, Australian and New Zealand Journal of Psychiatry, 48, 651-661.Stein, DJ (2013). Obsessive-compulsive disorder. South African Journal of Psychiatry, 19(3), 180-186. Stein, D. J. (2002). Obsessive-compulsive disorder. The Lancet, 360, 397-405. Subramaniam, M., Soh, P., Vaingankar, J.A., Picco, L., & Chong, S.A. (2013), Quality of life in obsessive-compulsive disorder: impact of disorder and treatment. Drugs for the central nervous system, 27, 367-383.Thomsen, Per Hove. (2013). Obsessive-compulsive disorders. European Child and Adolescent Psychiatry, 22, S23-S28.