Myositis
Evidence: Unconfirmed
Names
Myositis
Idiopathic inflammatory myopathies (IIMs)
Polymyositis
Dermatomyositis
Inclusion body myositis
Juvenile myositis
Description
Myositis is inflammation of the muscles, which may cause muscle weakness, swelling, and pain. Polymyositis, dermatomyositis, inclusion body myositis, and juvenile myositis are all specific types of myositis.
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Prevalence
US Cases: 41,000-49,000 [Meyer 2014].
Typical Age of onset
Adults between ages 30-60 and children between ages 5-15
Symptoms
Trouble rising from a chair
Difficulty climbing stairs or lifting arms
Tired feeling after standing or walking
Trouble swallowing or breathing
Muscle pain and soreness that does not resolve after a few weeks
References
Healthline
Johns Hopkins
MedlinePlus
The Myositis Association
Profile by Tania Gonzalez