Once believed to be rare, OCD was found to have a lifetime prevalence of 2,300 per 100,000 (2.3%) of the overall population. The twelve month prevalence of OCD is 1,200 per 100,000 (1.2%) of the overall population.  Discovery of effective treatments and education of patients and health care providers have significantly increased the identification of individuals with OCD. International studies have shown a similar incidence and prevalence of OCD worldwide.
Obsessive-compulsive disorder epidemiology and demographics
Bipolar disorder epidemiology and demographics
Generalized anxiety disorder epidemiology and demographics
Post traumatic stress disorder epidemiology and demographics
Anxiety epidemiology and demographics
Delusional disorder epidemiology and demographics
Attention-deficit hyperactivity disorder epidemiology and demographics
Personality disorder epidemiology and demographics