The rabbit syndrome is a rest tremor of perioral and nasal muscles. It has been associated with both antipsychotic drug therapy and idiopathic Parkinson’s disease and is therefore presumably related to dopamine deficiency. No specific investigations are required, but a drug history, including over the counter medication, is crucial. The condition may be confused with edentulous dyskinesia, if there is accompanying tremor of the jaw and/or lip, or with tardive dyskinesia. Drug-induced rabbit syndrome may remit with drug withdrawal but not always. Appropriate treatment of Parkinson’s disease may also improve the involuntary movements. Anticholinergics may be tried.