delusional disorder

A mental disorder characterized by the existence of certain nonbizarre delusions (those involving situations that occur in life such as being followed, being deceived by a spouse or lover, or having a disease). The delusions persist more than one month and, apart from the impact of the delusions, psychosocial functioning is not severely impaired. Specific subtribes of delusional disorder include erotomanic type, grandiose type, jealous type, persecutory type, somatic type, and mixed delusions. The DSM-IV (Washington, DC: American Psychiatric Association, 1994, pp. 296–302) has replaced delusional (paranoid) disorder and paranoid disorder with this label.