Schizophrenia is a severe mental disorder characterized by positive symptoms like hallucinations and delusions, as well as negative symptoms that impact emotional expression and behavior. It affects about 1% of the population and has no known cause but genetic and environmental factors are thought to play a role. There are different subtypes of schizophrenia based on symptoms, and it is diagnosed through a clinical examination and history. Treatment involves antipsychotic medications as well as therapies to manage symptoms and promote functioning. Nurses play an important role in caring for those with schizophrenia.