A withdrawal syndrome (also called a discontinuation syndrome) is a set of symptoms occurring in discontinuation or dosage reduction of some types of medications and recreational drugs. The risk of a discontinuation syndrome occurring increases with dosage and length of use.
Alcohol withdrawal syndrome, symptoms seen when an individual reduces or stops alcohol consumption after periods of excessive alcohol intake
Antidepressant discontinuation syndrome, a syndrome that can occur following the interruption, dose reduction, or discontinuation of SSRI or SNRI medications
Antipsychotic withdrawal syndrome or dopamine supersensitivity psychosis, symptoms seen when an individual reduces or suddenly stops antipsychotics