Sick of shrink asking if i'm on drugs, is psychosis often drug related?

Can be: Certain drugs can increase risk of psychosis so it is a reasonable question.

IT CAN BE: A thorough evaluation is necessary and asking about drug history is very appropriate. Psychosis can result from drug usage of many types.

Yes it can be !: Psychosis can be caused by mental illness , such as schizophrenia , schizoaffective d/o , major depressive d/o with psychosis, bad , ptsd-and substance use d/o. Therefore, it is important to ask about substance abuse.