This is a condition that causes severe mood changes, such as feeling sad, hopeless, suicidal or feeling overly active and restless. These symptoms are often so severe that they disrupt a [...]
Schizophrenia is a biological brain disease which impairs the ability to think rationally and relate well to others. Persons with schizophrenia may have hallucinations and delusions.
Just like a person can develop illnesses of the body, a person can develop illnesses of the brain that affect thoughts and behavior and interfere with normal living.