Isolated Lingual Dystonia as the Manifestation of Acute Extrapyramidal Syndrome Induced by Metoclopramide.

Oromandibular dystonia is characterized by persistent contractions and repetitive spasms of masticatory muscles surrounding the oral cavity and lingual muscles. The lingual dystonia is rare hyperkinetic movement disorder, often occurring secondary to drugs. The common drugs which can cause acute focal dystonia are neuroleptics, antiemetics, and antipsychotics. Isolated lingual dystonia is a rare form of disabling focal dystonias. We report a young female, who developed tongue dystonia in isolation and responding favorably to antihistaminics. The physicians are advised to make inquiry about administered drugs in isolated lingual dystonia.