psychotic disorder delusional disorder A psychotic disorder that involves an uncommon psychiatric condition in which patients present with circumscribed symptoms of non-bizarre delusions, but with the absence of prominent hallucinations and no thought disorder, mood disorder, or significant flattening effect. DOID:778 ICD9CM:297.1 MSH:D012563 SNOMEDCT_2010_1_31:192330005 SNOMEDCT_2010_1_31:48500005 UMLS_CUI:C0011251 disease_ontology Criterion A for delusional disorder no longer has the requirement that the delusions must be nonbizarre. DSM-5 no longer separates delusional disorder from shared delusional disorder. If criteria are met for delusional disorder then that diagnosis is made. (Highlights of Changes from DSM-IV-TR to DSM-5, American Psychiatric Publishing) F22.0 MFOMD_0000094 297.1 Is characterised by at least one month of nonbizarre delusions without other active-phase symptoms of schizophrenia. DSM-IV-TR (american Psychiatric Association)