The main symptom of polymyositis (PM) is muscle weakness, primarily in the neck, upper arms, and thighs. When the muscle weakness occurs along with a distinctive rash, it is called dermatomyositis (DM).
People with PM and DM usually have a difficult time getting up from a chair, raising their arms above their head, and climbing stairs. They may also have fatigue and difficulty swallowing. (Also see Autoimmune Diseases, and Dermatomyositis/Polymyositis)
As with many autoimmune diseases, PM and DM can lead overlap with other diseases as well as result in various complications such as lung problems and certain cancers.
Symptoms of Dermatomyositis. The most common signs and symptoms of dermatomyositis include a violet-colored or dusky red rash and progressive muscle weakness. MayoClinic.
Symptoms of Polymyositis. Progressive muscle weakness is the most common polymyositis symptom.Signs and symptoms of polymyositis usually appear gradually and may fluctuate day to day, month to month. MayoClinic.
Symptoms of Dermatomyositis and Polymyositis. Weakness of muscles is the most common symptom of polymyositis. MedicineNet.
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