The DSM describes approximately 150 different psychological disorders, as well as disorders that fall under a category of similar or related disorder subtypes. Some of the prominent diagnostic categories include eating disorders, mood disorders, somatoform disorders, sleep disorders, anxiety disorders and personality disorders.
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Kessler, R.C., Chiu, W.T., Demler, O., Merikangas, K.R., & Walters, E.E. (2005). Prevalence, severity, and comorbidity of 12-month DSM-IV disorders in the National Comorbidity Survey Replication. Archives of General Psychiatry, 62(2), 617-627.
National Institute of Mental Health. (2008). The numbers count: Mental disorders in America. Found online at
National Institute of Mental Health. (2014). Serious mental illness (SMI) among U.S. adults. Retrieved from