Polymyositis
Evidence: Antibody
Names
Description
Polymyositis
PM
Polymyositis is inflammation of muscle tissue, causing chronic muscle weakness in both sides of the body.
Bloggers
We could not find any current blogs for this disease. If you have a blog with entries within the past year or know of a blog, please contact us.
Prevalence
US Cases: 16,000 - 70,000 [Cheeti 2020], but this is unsubstantiated and includes dermatomyositis, which reports the same prevalence and therefore double counts this number.
Typical Age of onset
Typically, polymyositis occurs after age 20. But it most commonly affects individuals between the ages of 31 and 60.
Symptoms
Inflammation of muscles
Muscle weakness in muscles of trunk (hips, thighs, shoulders, upper arms, and neck)
Difficulty climbing stairs
Difficulty lifting arms
Fatigue
Shortness of breath
Fever
Weight loss
Joint pain
Difficulty swallowing
