Progressive muscular atrophy  

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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.
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Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.

Progressive muscular atrophy (PMA), also known as Duchenne-Aran muscular atrophy and Duchenne-Aran disease — is a rare subtype of motor neuron disease (MND) which affects only the lower motor neurones. PMA is thought to account for around 4% of all MND cases. This is in contrast to amyotrophic lateral sclerosis (ALS), the most common form of MND, which affects both the upper and lower motor neurones, or primary lateral sclerosis, another rare MND variant, which affects only the upper motor neurons. The distinction is important because PMA is associated with a better prognosis than classical ALS.



Unless indicated otherwise, the text in this article is either based on Wikipedia article "Progressive muscular atrophy" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on original research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

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