Acute dystonia

Oculogyric crisis, jaw spasm, torticollis, tongue spasm, opisthotonic posturing soon after dopamine blockade

UrgentReview due

Compare (6)

At a glance

High risk: Yes
Onset: Hours
Course: Abrupt
Treatable: Rapidly

Safety snapshot

Watch forAirway compromisesevere distresslaryngospasm

Presentation hinge

Subjective inner restlessness is the key feature, often with observable motor restlessness.

Separates the Akathisia / EPSE / Tremor / Sedation group. It is not specific to Acute dystonia.

Do now

1Recognise acute dystonia as sustained involuntary muscle contractions and spasms (e.g., oculogyric crisis, torticollis, trismus, or laryngeal spasm) following dopamine receptor blockade
2Perform immediate airway assessment to rule out life-threatening laryngeal dystonia and stridor, keeping emergency airway equipment accessible
3Administer emergency anticholinergic therapy immediately using parenteral benztropine or diphenhydramine
4Reassess symptoms after parenteral anticholinergic administration; prepare to repeat therapy or secure the airway if laryngeal spasm does not rapidly resolve
5Review the causative dopamine antagonist and prescribe short-term oral anticholinergic coverage to prevent rebound dystonia

Locally authored, reviewed by PsychSift on 6 October 2026

Clinical review

Rows marked “Whole group”: Applies to the Akathisia / EPSE / Tremor / Sedation group — not specific to Acute dystonia

Why it fits

Oculogyric crisis, jaw spasm, torticollis, tongue spasm, opisthotonic posturing soon after dopamine blockade

Key features

Must-not-miss

Airway compromise, severe distress, laryngospasm.

High-risk causes3 causes

Airway compromise
severe distress
laryngospasm

Bedside question

Applies to the Akathisia / EPSE / Tremor / Sedation group.

Subjective inner restlessness is the key feature, often with observable motor restlessness.

Helpful clues

Immediate action

Applies to the Akathisia / EPSE / Tremor / Sedation group.

One of the most commonly missed and most distressing psychiatric side effects Bilateral onset after medication strongly suggests drug-induced parkinsonism Dramatic but very treatable once recognised Not every restless movement is akathisia; tardive phenomenology is different Tremor type and context usually solve the differential

Priority steps5 steps

1One of the most commonly missed and most distressing psychiatric side effects
2Bilateral onset after medication strongly suggests drug-induced parkinsonism
3Dramatic but very treatable once recognised
4Not every restless movement is akathisia; tardive phenomenology is different
5Tremor type and context usually solve the differential

Investigations

Applies to the Akathisia / EPSE / Tremor / Sedation group.

Thyroid function tests

Core tests

Mimics / overlap

Applies to the Akathisia / EPSE / Tremor / Sedation group.

None listed

Consider

Do now

1Recognise acute dystonia as sustained involuntary muscle contractions and spasms (e.g., oculogyric crisis, torticollis, trismus, or laryngeal spasm) following dopamine receptor blockade
2Perform immediate airway assessment to rule out life-threatening laryngeal dystonia and stridor, keeping emergency airway equipment accessible
3Administer emergency anticholinergic therapy immediately using parenteral benztropine or diphenhydramine
4Reassess symptoms after parenteral anticholinergic administration; prepare to repeat therapy or secure the airway if laryngeal spasm does not rapidly resolve
5Review the causative dopamine antagonist and prescribe short-term oral anticholinergic coverage to prevent rebound dystonia

Locally authored, reviewed by PsychSift on 6 October 2026

First-line tests

Applies to the Akathisia / EPSE / Tremor / Sedation group — not specific to Acute dystonia

Thyroid function tests

Watch for

Airway compromise
severe distress
laryngospasm

Also consider

Source and review

Review due· Unverified

v10 · exported 2026-07-11

Clinical reference — not validated decision support. Review before use.