Schizophrenia is a mental disorder that affects approximately 0.85% of the world's population. It has been studied since the early 20th century, with theorists proposing genetic, biochemical, neurological, psychological, and social factors as potential causes. Diagnosis involves symptoms such as hallucinations, delusions, and disordered thinking. Treatment includes antipsychotic medications and psychosocial therapies.

1. SCHIZOPHRENIA