Myositis (my-uh-SY-tis) is inflammation of the muscles
that can be caused by many conditions and diseases that make muscles weak, swollen,
More to Know
In all types of myositis, something causes the immune
system to attack healthy muscle tissue. This can be due to infection, trauma,
a drug reaction, or an autoimmune-related disease, and can cause muscle weakness,
swelling, and pain. In rare cases, myositis that affects neck or chest muscles
can make it hard to swallow or breathe.
Myositis can range from mild to severe. Some cases cause only mild weakness and
may go away on their own, especially if due to a viral
infection. Other cases can make routine movements difficult and may cause long-term
medical problems if left untreated.
Keep in Mind
There is no cure for myositis, but in most cases, treatment with rest, good fluid
intake, and sometimes medications can limit the damage to muscle tissue and help increase
strength. If myositis is due to an autoimmune disease, proper treatment can keep the
disease under control.
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