The prime objective of this article is to know about diagnosing schizophrenia. Diagnosing schizophrenia is not simple. The primary signs of its manifestation may only be a modify of friends, a drop in grades or irritability and not even appear to be “typical” signs of psychosis. Complicating diagnosis further is that the symptoms of schizophrenia also resemble those of other mental and physical health problems, such as bipolar disorder and brain tumors.