Who- Men and Women can both experience this illness
What- There are two types of schizophrenia:
Positive symptoms: Extra feelings or behaviors that do not usually happen
Believing what other people are saying is not true or delusions
Hearing, seeing, tasting, feeling, or smelling things that others don’t or hallucinations
Unorganized speech and behavior
Negative symptoms: A lack of behaviors or feelings that usually are present,such as:
Not showing interest in everyday life situations, like bathing, grooming, or getting dressed
Feeling out of touch with other people, family, or friends
Lack of feeling or emotion
Having little emotion or inappropriate feelings in certain situations
Having less ability to be happy
Where:
In small ways the brains of people with schizophrenia look different than those of healthy people. For example, fluid-filled cavities at the center of the brain, called ventricles, are larger in some people with schizophrenia. The brains of people with this illness may have some areas of the brain that have less or more activity.

When: Men usually start to show symptoms in their late teens or early twenty’s.Women show signs around mid twenties or early thirties.
Why:
Studies show that schizophrenia could be caused by an imbalance of chemicals in the brain that could cause messages in the brain to get confused as to what their job is. Scientists believe that schizophrenia, may also be caused from a combination of genetic and environmental factors.

http://www.invegasustenna.com/about-schizophrenia?sitelink=About%20Schizophrenia&utm_so
http://www.invegasustenna.com/symptoms-of-schizophrenia
http://faculty.washington.edu/chudler/schiz.html