Addict

Addiction takes both substance and non-substance forms. Substance addictions include alcoholism, cannabis addiction, amphetamine addiction, cocaine addiction, nicotine addiction, and opioid addiction. The DSM-5-TR recognizes only gambling disorder as a behavioral (non-substance) addiction and lists internet gaming disorder as a condition for further study, while the ICD-11 additionally classifies gaming disorder as a disorder due to addictive behaviors. Other candidate behavioral addictions, and the question of whether food can be addictive, are debated in the research literature but are not recognized in either manual. Across these forms, addiction is defined less by any single symptom than by a pattern: impaired control over the substance or behavior, increasing priority given to it over other activities, and continued use despite harm, accompanied for many substances by tolerance and withdrawal. It carries a substantial risk of further illness and early death, most immediately from overdose, and co-occurring psychiatric conditions are common.