Paroxysmal dystonia and paroxysmal tremor in a young patient with multiple sclerosis

Area of Science:

• Neurology
• Pediatric Neurology
• Movement Disorders

Background:

• Multiple sclerosis (MS) is a demyelinating disease that can affect children and adolescents.
• Paroxysmal dystonia (PD) is characterized by brief, involuntary muscle contractions causing abnormal postures.
• Childhood-onset MS is rare, and its presentation with movement disorders requires careful consideration.

Observation:

• A 16-year-old patient with MS experienced recurrent episodes of unilateral dystonic posturing during a disease exacerbation.
• These paroxysmal dystonia episodes resolved completely with acetazolamide treatment.
• A distinct episode of generalized tremor, described as paroxysmal dystonic tremor, occurred after PD resolution.

Findings:

• The case provides evidence for considering MS in the differential diagnosis of symptomatic childhood paroxysmal dystonia.
• Acetazolamide demonstrated efficacy in managing acute paroxysmal dystonia attacks in this pediatric MS patient.
• A rare paroxysmal dystonic tremor was observed, potentially representing a variant within the spectrum of paroxysmal dystonia.

Implications:

• This report expands the understanding of MS manifestations in pediatric patients, including paroxysmal movement disorders.
• It underscores the importance of early diagnosis and targeted treatment for childhood MS.
• The findings suggest acetazolamide as a potential therapeutic option for paroxysmal dystonia in the context of MS.