Schizophrenia is a severe mental disorder causing disruptions in thought, perception, emotion, and behavior.Key Features:Positive Symptoms: Hallucinations (seeing/hearing things that aren't there), delusions (false beliefs), disorganized thinking/speech.Negative Symptoms: Reduced emotion, motivation, speech, and social interaction.Cognitive Impairment: Difficulties with memory, attention, and executive functions.Causes: A combination of genetic predisposition, brain chemistry imbalances (especially dopamine), and environmental factors (e.g., prenatal complications, stress, substance use).Diagnosis: Based on specific symptoms and functional impairment lasting at least six months.Treatment: Primarily antipsychotic medications, combined with psychotherapy (CBT, family therapy) and life skills training.Treatment can effectively manage symptoms and improve quality of life.Impact: Can significantly affect daily functioning, relationships, and employment, and is associated with reduced life expectancy due to co-occurring medical conditions and higher suicide risk.