This document presents a case study on substance abuse. It provides background information on a 33-year-old male patient, including his personal details, education, occupation, and family status. It then discusses substance abuse in terms of definitions, prevalence, causes, signs and symptoms, management, and the nursing role in caring for patients with substance abuse issues. Key aspects covered include the genetic, biological, neurological, psychological, and social factors contributing to substance abuse, as well as the physical, behavioral, and intoxication signs of abuse for various substances. Treatment involves detoxification, rehabilitation, counseling, and pharmacological therapies. Nurses play an important role in meeting patient needs, developing trust, and providing education and support throughout the treatment process