G25.4

Clinical Causes: Use of neuroleptic medications (e.g., haloperidol, chlorpromazine) Dopaminergic agents used in Parkinson’s disease treatment (e.g., levodopa, amantadine) Certain antidepressants and antipsychotic drugs Illicit drug use, such as cocaine or methamphetamines Medication overdose or interaction leading to excessive dopaminergic activity Exposure to drugs that affect the basal ganglia and dopaminergic pathways

Key Symptoms: Involuntary, purposeless movements that are irregular and unpredictable Facial grimacing or twitching involuntary movements of the limbs, such as jerky arm or leg motions Constant movement that can interfere with daily activities Potential for movements to worsen with stress or excitement Movements may diminish during sleep Sometimes associated with other neurological signs, depending on the cause

Diagnosis Path: Diagnosis primarily involves a detailed medical history, focusing on recent medication use. A physical neurological examination assesses the pattern of movements and their impact. Healthcare providers may also recommend imaging studies like MRI or CT scans to rule out other neurological conditions. Blood tests could be used to evaluate medication levels or identify metabolic causes. Differential diagnosis is crucial to distinguish drug-induced chorea from other movement disorders like Huntington’s disease or other forms of chorea.

Treatment Protocols: Discontinuation or adjustment of the offending medication under medical supervision Switching to alternative drugs with lower risk of movement side effects Use of medications that suppress involuntary movements, such as tetrabenazine or clonazepam, may be considered Symptomatic management to improve quality of life Addressing underlying conditions that might contribute to sensitivity to drugs Regular follow-up to monitor symptom progression or resolution