Which muscles are typically involved in polymyositis?

Updated: Feb 12, 2018
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

The pharyngeal and neck flexor muscles are often involved, causing dysphagia and difficulty in holding up the head. When the patient is first seen, many of the muscles of the trunk, shoulders, hips, upper arms, and thighs are usually involved. In restricted forms of the disease, only the neck or paraspinal muscles (camptocormia) are affected. [15]


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