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Primary lateral sclerosis (PLS) is a very rare neuromuscular disease characterized by progressive muscle weakness in the voluntary muscles. PLS belongs to a group of disorders known as motor neuron diseases .
[1] [2] They include amyotrophic lateral sclerosis (ALS), [3] [4] progressive bulbar palsy (PBP), pseudobulbar palsy, progressive muscular atrophy (PMA), primary lateral sclerosis (PLS), spinal muscular atrophy (SMA) and monomelic amyotrophy (MMA), as well as some rarer variants resembling ALS. Motor neuron diseases affect both children and ...
Amyotrophic lateral sclerosis (ALS), also known as motor neurone disease (MND) or (in the United States) Lou Gehrig's disease (LGD), is a rare, terminal neurodegenerative disorder that results in the progressive loss of both upper and lower motor neurons that normally control voluntary muscle contraction. [3]
Juvenile primary lateral sclerosis has an autosomal recessive pattern of inheritance, meaning both copies of the gene in each cell are altered. Juvenile primary lateral sclerosis ( JPLS ) also known as primary lateral sclerosis, juvenile ( PLSJ ), is a very rare genetic disorder , with a small number of reported cases, characterized by ...
Multiple sclerosis, or focal sclerosis, [2] is a central nervous system disease which affects coordination. Osteosclerosis, a condition where the bone density is significantly increased, resulting in decreased lucency on radiographs. Otosclerosis, a disease of the ears. Primary lateral sclerosis, progressive muscle weakness in the voluntary ...
In contrast to amyotrophic lateral sclerosis or primary lateral sclerosis, PMA is distinguished by the absence of: [citation needed] brisk reflexes; spasticity; Babinski's sign; emotional lability; The importance of correctly recognizing progressive muscular atrophy as opposed to ALS is important for several reasons. The prognosis is a little ...
The cause of PBP is unknown. One form of PBP is found to occur within patients that have a CuZn-superoxide dismutase (SOD1) mutation. [7] Progressive bulbar palsy patients that have this mutation are classified with FALS patients, Familial ALS (FALS) accounts for about 5%-10% of all ALS cases and is caused by genetic factors.
This includes amyotrophic lateral sclerosis (ALS), progressive bulbar palsy (PBP), pseudobulbar palsy, progressive muscular atrophy (PMA), primary lateral sclerosis (PLS), spinal muscular atrophy (SMA) and monomelic amyotrophy (MMA), as well as some rarer variants resembling ALS.