This document provides a comprehensive overview of psychotic illness and schizophrenia, covering key concepts, symptoms (hallucinations, delusions, thought disorders), precipitating factors, and the stages of psychosis. It defines schizophrenia, its prevalence, causes (genetic, biochemical, and vulnerability/stress), and differentiates between facts and myths. The assignment details the use of antipsychotic medications, including typical and atypical drugs, their mechanisms of action, and adjunct treatments like hospital care, rehabilitation, and psychological therapies (CBT, family therapy, and self-help groups). It also discusses the management of medication side effects and strategies for handling challenging behaviors, including triggers and risk assessments. The document emphasizes the importance of understanding and addressing challenging behaviors, which can be triggered by intrinsic and extrinsic factors, and provides guidance on how nurses can help clients manage medication side effects and challenging behaviors, focusing on de-escalation techniques, risk assessment and the importance of a calm approach.