What is the prevalence of tongue fasciculations in spinal muscle atrophy (SMA)?

Updated: Aug 11, 2020
  • Author: Ashish S Ranade, MBBS, MS, MRCS; Chief Editor: Jeffrey A Goldstein, MD  more...
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Tongue fasciculations are pathognomonic of SMA (all types), as opposed to all other neuromuscular diseases of infancy. The presence of tongue fasciculations can aid in the diagnosis, in that 56% of patients exhibit this symptom.

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