What is delusional disorder?

Non bizarre delusions IRL situations for at least 1 month, w/no criterion A schizophrenia met, functioning or behavior not markedly impaired and mood episodes occurred and brief and not related to substance use. Specific types (erotomanic, grandiose, jealous, persecutory, somatic, mixed, unspecified) Persecutory is most common. Erotomanic, jealousy, and somatic are also common. Some hallucinations are acceptable (i.e. does not imply schizophrenia) if they are restricted to the context of the delusion Occurs in 0.3% of population Onset usually after age 30 Course is variable Rare and heterogeneous, very difficult to characterize or treat: Antipsychotics work to some extent Cognitive therapy ineffective