Answer:
Six months
Explanation:
Schizophrenia is a psychological disorder. It is a chronic disorder. It is a combination of the symptoms such as cognitive psychological and social. There are so many difficulties to define schizophrenia. It is not so simple to diagnose the criteria of schizophrenia disorder. A. to the DSM-5 the prevalence rate of schizophrenia for a lifetime is 0.3 to 0.7 percent. The features of schizophrenia occur between the age of mid-teens and thirties.
These symptoms include six months of criteria. Thus the continuous sign of the disturbance which can include prodromal or residual symptoms as well as an active phase symptom should be at list six-month criteria to diagnose the schizophrenia.