What Is It?
Schizophrenia is a chronic (long-lasting) brain disorder that is easily misunderstood. Although symptoms may vary widely, people with schizophrenia frequently have a hard time recognizing reality, thinking logically and behaving naturally in social situations. Schizophrenia is surprisingly common, affecting 1 in every 100 people worldwide.
Experts believe schizophrenia results from a combination of genetic and environmental causes. The chance of having schizophrenia is 10% if an immediate family member (a parent or sibling) has the illness. The risk is as high as 65% for those who have an identical twin with schizophrenia.