What is the prevalence of palatal muscle weakness in patients with myasthenia gravis (MG)?

Updated: Aug 27, 2018
  • Author: Abbas A Jowkar, MBBS; Chief Editor: Nicholas Lorenzo, MD, CPE, MHCM, FAAPL  more...
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Weakness of palatal muscles can occur in roughly 40% of all patients. It can cause the voice to become hypophonic and assume a nasal twang. Nasal regurgitation of food (especially liquids) can occur. An inability to pucker lips or whistle, or puffing the cheeks out against resistance can be noted. As neuromuscular transmission may actually be improved by cooler temperatures, patients note cold food and liquids are easier to swallow than warm foods and liquids are.

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