What drugs cause dystonic reactions?
Neuroleptics (antipsychotics), antiemetics, and antidepressants are the most common causes of drug-induced dystonic reactions. Acute dystonic reactions have been described with every antipsychotic. Alcohol and cocaine use increase risk.
How long does drug induced dystonia last?
Treatment for acute dystonia includes discontinuing the offending drug and treatment with anticholinergics or antihistamines (i.e. diphenhydramine), often injected or intravenously. Even without medical treatment, most cases resolve within 12 to 48 hours.
What is a dystonic drug reaction?
Although a wide variety of medications can elicit symptoms, the typical antipsychotics are most often responsible. Dystonic reactions (ie, dyskinesias) are characterized by intermittent spasmodic or sustained involuntary contractions of muscles in the face, neck, trunk, pelvis, extremities, and even the larynx.
Is a dystonic reaction an emergency?
Drug-induced dystonic reactions are common presentations to the emergency department. Two cases of acute dystonic reactions presenting as acute medical emergency illustrate the associated fatality and possibility of misdiagnosis.
What are the symptoms of a dystonic reaction?
An acute dystonic reaction is characterized by involuntary contractions of muscles of the extremities, face, neck, abdomen, pelvis, or larynx in either sustained or intermittent patterns that lead to abnormal movements or postures.
Can drug induced dystonia be reversed?
In almost all instances, drug induced dystonias are reversible, resolving after the discontinuation of the offending drug. Tardive dystonia is a rare exception to this rule with a potential for becoming permanent.
How is drug induced dystonia treated?
Can opiates cause dystonia?
[6] Hence, during an opioid abstinent state, opioid receptors will not be activated, resulting in a lack of inhibition of the inhibitory GABAergic interneurons in the VTA, ultimately leading to decreased dopamine neurotransmission to the NA, creating a dopamine depletion state, which in turn causes dystonia.
How do you stop a dystonic reaction?
Treatment / Management The most commonly available drugs in the emergency setting for the treatment of acute dystonic reactions are diphenhydramine and benztropine. Symptoms usually improve or resolve dramatically within 10 to 30 minutes of administration of parenteral anticholinergics.
How do you reverse a dystonic reaction?
Anticholinergic agents and benzodiazepines are the most commonly used agents to reverse or reduce symptoms in acute dystonic reaction. Acute dystonic reactions are often transient but can cause significant distress to the patient.