A substance-specific organic brain syndrome that follows the discontinuation of administration or use, or reduction in intake of a substance (including alcohol, prescribed medications and recreational drugs). Syndrome manifests with diverse, often painful physical and psychological symptoms, which include but not limited to intense drug craving, anxiety, depression, insomnia, nausea, perspiration, body aches, tremors, hallucinations, and convulsions. The disease is MONDO_0005567 (substance withdrawal syndrome). Also known as: drug withdrawal, drug withdrawal syndrome, substance withdrawal, substance withdrawal disorder, withdrawal syndrome.