A diagnosis of “delusional disorder” is given when a person experiences one or more delusions within a period of 1 month or longer. Apart from the impact of the delusion(s), functioning is not markedly impaired, and behavior is not obviously bizarre or odd. If manic or major depressive episodes have occurred, they have been brief compared to the duration of the delusional periods. The diagnosis requires that major schizophrenic features are not present, and the delusion(s) is not attributable to the physiological effects of a substance, another medical condition, or other mental disorder such as body dysmorphic disorder or obsessive-compulsive disorder.
Types of delusional disorders include:
Mental Health Library Sources:
Information included in all topics of the Mental Health Library comes from the Desk Reference to the Diagnostic Criteria From DSM-5 and Kaplan & Sadock’s Concise Textbook of Clinical Psychiatry. Complete diagnostic and treatment information may be found within these publications.
Information within the Mental Health Library is not intended to be used for self-diagnosis purposes. Rather, it is provided as a public educational service to make people aware of mental health conditions. Please consult a qualified mental health professional for a diagnosis of any suspected mental health illness.
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