Schizophrenia is a mental illness. It is very serious and should not be taken lightly. Someone who has Schizophrenia has some or all of the following symptoms: hallucinations, delusions, emotional withdrawal, extreme emotions, or psychotic episodes. Scientists have not yet found the cause of this mental illness but it generally occurs around the ages 15-45. You have an increased risk if your parents have the disease. The disease does not hit someone suddenly, it creeps gradually in your mind. Someone that has Schizophrenia may feel like someone is out to kill or harm them, or feel like they are being watched. They can experiences voices in their heads that command them to perform certain actions. Despite certain beliefs, many people who are schizophrenic are not harmful. They do however, have an increased risk of committing suicide and should be constantly watched.