Heroin addiction is a condition in which a person becomes physically and psychologically dependent on heroin, a highly addictive opioid drug. Heroin use can lead to changes in brain chemistry and the development of dependence, as well as a range of physical and mental health complications. Treatment options for heroin addiction may include medication-assisted treatment, behavioral therapies, and support groups. Prevention strategies include avoiding heroin use altogether, seeking non-opioid pain management alternatives, and safe disposal of unused medications. The opioid epidemic has brought increased attention to heroin addiction and its devastating effects, and addressing opioid addiction and misuse remains a critical priority in healthcare.