1. a pathological retreat from interpersonal contact and social involvement, as may occur in avoidant, schizoid, or schizotypal personality disorders. 2. the removal of something. 3. a substance-specific substance-induced disorder that follows the cessation of use or reduction in intake of a psychoactive substance that had been regularly used to induce a state of intoxication. Specific withdrawal syndromes include those for alcohol, amphetamines or similarly acting sympathomimetics, cocaine, nicotine, opioids, and sedatives, hypnotics, or antianxiety agents. Called also abstinence syndrome, withdrawal symptoms, and withdrawal syndrome.The usual reactions to alcohol withdrawal are anxiety, weakness, gastrointestinal symptoms, nausea and vomiting, tremor, fever, rapid heartbeat, convulsions, and delirium (
1. The act of removal or retreat.
1. The act of removal or retreat. 2. A psychological and/or physical syndrome caused by the abrupt cessation of the use of a drug in an habituated person.