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Rabbit syndrome: update on aetiology and management for pharmacists, psychiatrists and dentistsRabbit syndrome (RS) is an involuntary movement disorder, characterized by fast and fine movements of oral and masticatory muscles along the mouth vertical axis in the absence of tongue involvement. RS prevalence varies between 2.3% to 4.4% and could result from the administration of antipsychotics and antidepressants. In case of second generation antipsychotics, there is a reduced risk of RS compared with first generation antipsychotics with mainly isolated literature case reports especially with the use of risperidone as antipsychotic. RS affects only the buccal region, with the possible involvement of the basal ganglia, in particular the substantia nigra. The management of RS include reduction or change of the psychotropic treatment and use of anticholinergic medications such as trihexyphenidyl. Although RS is rare and easily treatable, it is essential that dentists and psychiatrists could distinguish this syndrome from other movement disorders such as tardive dyskinesia.