Haloperidol-induced isolated lingual dystonia.

Area of Science:

• Neuroscience
• Pharmacology
• Psychiatry

Background:

• Antipsychotic medications, particularly typical antipsychotics like haloperidol, are mainstays in managing psychotic disorders.
• Extrapyramidal symptoms (EPS) are known side effects of haloperidol, including acute dystonia, parkinsonism, and akathisia.

Observation:

• A 28-year-old woman with agitation, mania, and psychotic features was treated with haloperidol concentrate.
• She rapidly developed isolated lingual dystonia, characterized by involuntary tongue movements.

Findings:

• The onset of lingual dystonia occurred shortly after initiating haloperidol concentrate.
• This case suggests a potential link between haloperidol concentrate and the development of isolated lingual dystonia.

Implications:

• Clinicians should be vigilant for orolingual dystonic reactions, even in isolated forms, with haloperidol use.
• This case underscores the importance of monitoring for and recognizing rare adverse drug reactions in psychiatric pharmacotherapy.