What is akathisia?

What is akathisia?

• A. Tremor
• B. Restlessness with inability to sit still
• C. Fever and altered mental status
• D. Dry mouth

Answer: (B)

Akathisia is a movement disorder defined by a profound inner restlessness and an inability to sit still, often paired with observable actions like pacing, fidgeting, or constant shifting in the chair. This uncomfortable urge to move is most commonly caused by medications that block dopamine in the brain, especially antipsychotics or certain antidepressants, and it typically appears within days to weeks after starting or increasing the offending drug. Because the person feels an inner drive to move, it can be mistaken for anxiety or agitation, but the key feature is the relentless need to move and the inability to remain settled. This is different from a tremor, which is a rhythmic, involuntary shaking seen with parkinsonism, where the primary issue is a tremor rather than an incessant urge to move. It’s not associated with fever or markedly altered mental status—that kind of presentation would suggest something more serious such as neuroleptic malignant syndrome. Dry mouth, while a possible drug side effect, does not capture the essential experience of akathisia. Understanding akathisia helps in recognizing a distressing side effect and guides management, which often involves adjusting the offending medication and using treatments like beta-blockers or benzodiazepines to relieve the restlessness.

Akathisia is a movement disorder defined by a profound inner restlessness and an inability to sit still, often paired with observable actions like pacing, fidgeting, or constant shifting in the chair. This uncomfortable urge to move is most commonly caused by medications that block dopamine in the brain, especially antipsychotics or certain antidepressants, and it typically appears within days to weeks after starting or increasing the offending drug. Because the person feels an inner drive to move, it can be mistaken for anxiety or agitation, but the key feature is the relentless need to move and the inability to remain settled.

This is different from a tremor, which is a rhythmic, involuntary shaking seen with parkinsonism, where the primary issue is a tremor rather than an incessant urge to move. It’s not associated with fever or markedly altered mental status—that kind of presentation would suggest something more serious such as neuroleptic malignant syndrome. Dry mouth, while a possible drug side effect, does not capture the essential experience of akathisia.

Understanding akathisia helps in recognizing a distressing side effect and guides management, which often involves adjusting the offending medication and using treatments like beta-blockers or benzodiazepines to relieve the restlessness.