Unlike physical disorders, mental disorders are extremely difficult to diagnose. Only if we are aware of the probable signs of mental diseases, we can identify its patients. The book titled 50 Signs of Mental Illness: A Guide to Understanding Mental Health is very helpful in learning about the common mental disorders like schizophrenia and kleptomania among others. Schizophrenia, or split personality as it is commonly termed, might easily go unidentified for years if people are not aware of the common signs of schizophrenia. This book, priced at $36.16 and written by James Whitney Hicks, is highly educative and a must read for everybody.