<prompt> Most common delusional disorder in malepersecutorygrandioseerotomanicjealousy  <response>: What is a Delusion DELUSION - false fixed firm belief, subjective ceainity, compelling counterargument, impervious to other experiences and outside socio cultural and educational background How is delusional disorder different from schizophrenia Age of onset40s They dont have hallucinations Duration criteria for diagnosing delusional disorder is 3 months when compared to 1 month in schizophrenia No socio occupational detion apa from the delusion Epidemiology SS 0.3Delusional disorder 1schizophrenia SS 5mood disorder Most common SS M.C type of delusional disorder in Men paranoid SS M.C type of delusional disorder in Femaleerotomanic Ref. Kaplon and Sadock, Synopsis of psychiatry, 11 th edition, 335 