I need some assistance with these assignment. is schizophrenia a biological disorder Thank you in advance for the help!

I need some assistance with these assignment. is schizophrenia a biological disorder Thank you in advance for the help! Because of the scarcity of evidence that can be relied upon the disease is difficult to be identified with symptoms only.

Because of its unpredictable nature also because of lack of knowledge about its causes this disease is rightly called cancer of mental illness. Some scientists believe that researchers were successful in finding out the biological background of the disease in 1990s. The modern diagnostic equipment are somewhat useful in identifying the biological root causes of the disease. But the whole truth is yet to be discovered.

This disease was recognized and treated in its primitive forms about 3,000 years ago. Although the present name schizophrenia was not used in those days it was called dementia, and late demence precoce etc. But later on a German psychiatrist, Emil Kraepelin presented a theory to call it a single disease quite similar to dementia praecox. But the theory of Kraeplin was rebuted by Eugene Bleuler. Bleuler thought that it is not a single disease similar to dementia praecox.

According to symptoms clinical picture schizophrenia is divided into five subtypes. A person suffering from schizophrenia may not have symptoms of a single category so the usefulness of this division to subtypes is still considered a not very effective and reliable

Schizophrenia is quite common disease it accounts for almost 50 percent of most of mental disorders. This syndrome is equally common in men and women.