Fasciculations in human hereditary disease.

Acta Neurol Belg 2015 Jun 30;115(2):91-5. Epub 2014 Jul 30.

Krankenanstalt Rudolfstiftung Vienna, Postfach 20, 1180, Vienna, Austria,

Fasciculations are a manifestation of peripheral nerve hyperexcitability in addition to myokymia, neuromyotonia, cramps, or tetany. Fasciculations occur in hereditary and non-hereditary diseases. Among the hereditary diseases, fasciculations are most frequently reported in familial amyotrophic lateral sclerosis (FALS), and spinal muscular atrophy (SMA). Among the non-hereditary diseases, fasciculations occur most frequently in peripheral nerve hyperexcitability syndromes (Isaac's syndrome, voltage-gated potassium channelopathy, cramp fasciculation syndrome, Morvan syndrome). If the cause of fasciculations remains unknown, they are called benign. Systematically reviewing the literature about fasciculations in hereditary disease shows that fasciculations can be a phenotypic feature in bulbospinal muscular atrophy (BSMA), GM2-gangliosidosis, triple-A syndrome, or hereditary neuropathy. Additionally, fasciculations have been reported in familial amyloidosis, spinocerebellar ataxias, Huntington's disease, Rett syndrome, central nervous system disease due to L1-cell adhesion molecule (L1CAM) mutations, Fabry's disease, or Gerstmann-Sträussler disease. Rarely, fasciculations may be a phenotypic feature in patients with mitochondrial disorders or other myopathies. Fasciculations are part of the phenotype in much more genetic disorders than commonly assumed. Fasciculations not only occur in motor neuron disease, but also in hereditary neuropathy, spinocerebellar ataxia, GM2-gangliosidosis, Huntington's disease, Rett syndrome, Fabry's disease, Gerstmann-Sträussler disease, mitochondrial disorders, or muscular dystrophies.

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http://dx.doi.org/10.1007/s13760-014-0335-6DOI Listing
June 2015
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