About The Medical Condition Azorean Disease (Machado-Joseph)
Find the definition of the medical term Azorean Disease (Machado-Joseph). Azorean Disease (Machado-Joseph) defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Azorean Disease (Machado-Joseph)
| Azorean Disease (Machado-Joseph) Medical Condition |
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What's The Definition Of The Medical Condition Azorean Disease (Machado-Joseph)?
A dominantly-inherited ataxia first described in people of Azorean and Portuguese descent, and subsequently identified in Brazil, Japan, China, and Australia. This disorder is classified as one of the SPINOCEREBELLAR ATAXIAS (Type 3) and has been associated with a mutation of the MJD1 gene on chromosome 14. Clinical features include progressive ataxia, dysarthria, postural instability, nystagmus, eyelid retraction, and facial fasciculations. Dystonia is prominent in younger patients (referred to as Type I Machado-Joseph Disease). Type II features ataxia and ocular signs; Type III features muscle atrophy and a sensorimotor neuropathy; and Type IV features extrapyramidal signs combined with a sensorimotor neuropathy. (From Clin Neurosci 1995;3(1):17-22; Ann Neurol 1998 Mar;43(3):288-96)
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