Juvenile Huntington disease exacerbated by methylphenidate: case report.

Abstract:

:The authors describe the case of an 8-year-old boy, otherwise healthy, who presented with symptoms consistent with attention-deficit hyperactivity disorder (ADHD) and was started on a trial of methylphenidate. Within 4 weeks, he experienced a rapid decline in fine motor skills, with dysarthria, intention tremor, motor impersistence, and diffusely increased tone. Symptoms persisted despite cessation of methylphenidate. At that time, a paternal history of Huntington disease was disclosed. Molecular analysis revealed an expansion in CAG repeats to 75 copies, within the range characteristic of juvenile Huntington disease. This report raises the possibility that use of dopaminergic agonists in patients with a family history of Huntington disease may lead to clinical exacerbation of motor symptoms and/or unwitting diagnosis in an unprepared family.

journal_name

J Child Neurol

authors

Waugh JL,Miller VS,Chudnow RS,Dowling MM

doi

10.1177/0883073808314152

subject

Has Abstract

pub_date

2008-07-01 00:00:00

pages

807-9

issue

7

eissn

0883-0738

issn

1708-8283

pii

23/7/807

journal_volume

23

pub_type

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