Drug addiction is a complex and often chronic condition that involves the compulsive use of one or more substances despite harmful consequences to the individual’s physical and mental well-being. The brain’s reward circuitry is significantly altered, making it difficult for the individual to cease consumption. Such dependence can severely impair social functioning and result in negative outcomes in various life domains, including relationships, employment, and health. The causes of addiction are multifaceted, involving a combination of genetic predisposition, environmental factors, and psychological stressors. Treatment often involves a multidisciplinary approach, combining medical, psychological, and social support to help the individual attain a drug-free life.