choreoatetoïde

Choreoatetoïde is a movement disorder defined by the coexistence of chorea and athetosis. Chorea refers to quick, irregular, non-rhythmic jerks, while athetosis describes slow, writhing, continuous movements that often involve the face, tongue, trunk, and limbs. When these patterns occur together, the term choreoatetoïde is used to characterize the broader, overlapping phenomenology. The movements may be more evident with voluntary action and can be partially suppressed by rest or distraction, though the exact pattern varies by underlying cause.

Etymology and presentation provide the basis for clinical recognition. The term combines chorea (dance-like movements) and athetosis (unsteady, flowing movements) and is commonly encountered in descriptions of pediatric cerebral palsy, neurodegenerative disorders, and certain acquired brain injuries. Facial involvement, limb involvement, and trunk movements can produce functional impairment and gait disturbance.

Causes and pathophysiology are linked to dysfunction in the basal ganglia and related motor circuits. Choreoatetoïde can arise from perinatal hypoxic-ischemic injury, cerebral palsy (especially the athetoid form), Huntington disease and other neurodegenerative disorders, Wilson disease, metabolic disturbances, infections, stroke, and certain drug or toxin exposures. The precise pattern depends on lesion location and the evolving neural circuitry.

Diagnosis relies on clinical observation corroborated by history and targeted investigations. Imaging (MRI or CT) helps identify structural causes, while laboratory testing and genetic analyses may uncover metabolic, infectious, or hereditary etiologies.

Treatment is aimed at the underlying cause and symptom management. Options include physical and occupational therapy, speech therapy, and pharmacologic agents such as anticholinergics, benzodiazepines, antipsychotics, and vesicular monoamine transporter inhibitors (eg, tetrabenazine or deutetrabenazine). Botulinum toxin may be used for focal dystonia, and supportive measures address functional impairment and quality of life.

Prognosis varies with etiology and response to treatment; some cases improve with effective management of the underlying condition, while others persist as a chronic movement disorder.