Is medication need for infrequent (eg. occuring few times a week) psychosis symtoms? like hearing voices and delusions. is therapy enough?

Judgment call: This is a decision that you make after consulting with your mental health professional (e.g., psychiatrist). Sometimes people will believe that they have hallucinations or delusions, when a professional might explain these symptoms differently (e.g., illusions or irrational beliefs). If the symptoms are significantly interfering with functioning medication begins to look more favorable.