Progressive muscular atrophy
A rare, milder form of amyotrophic lateral sclerosis. It is characterized by a slowly progressive clinical course. Signs and symptoms include muscle weakness, atrophy, and fasciculation.
Progressive muscular atrophy (PMA) is a rare subtype of motor neuron disease (MND) that affects only the lower motor neurons. PMA is thought to be 4% of all motor neurone disease cases.[1]
This is in different 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.
References
change- ↑ Wijesekera LC, Mathers S, Talman P, Galtrey C, Parkinson MH, Ganesalingam J, Willey E, Ampong MA, Ellis CM, Shaw CE, Al-Chalabi A, Leigh PN (Mar 2009). "Natural history and clinical features of the flail arm and flail leg ALS variants". Neurology. 72 (12): 1087–1094. doi:10.1212/01.wnl.0000345041.83406.a2. PMC 2821838. PMID 19307543.
