Antidepressant discontinuation syndrome

Antidepressant discontinuation syndrome, or antidepressant withdrawal, is a condition that can occur following switching, reducing, or discontinuing an antidepressant medication following its continuous use of at least a month. The symptoms may include dizziness, vertigo, postural orthostatic tachycardia syndrome (POTS), tinnitus, insomnia, nausea, poor balance, sensory changes, "brain zaps", emotional lability or extreme emotional changes, rage, suicidal ideation, akathisia, dysesthesia, intrusive thoughts, depersonalization, and derealization, mania, anxiety, depression, stuttering, and flu-like symptoms.

Source: Wikipedia — Antidepressant discontinuation syndrome (CC BY-SA 4.0)