DM, or dermatomyositis (dur-mah-toe-my-uh-SY-tis), is a rare autoimmune disorder. It most often occurs in adults from their late 40s to 60s. DM can cause rash, joint pain, and muscle weakness.
Not actual patient
There are certain cells in the body called immune cells. They fight off infection and disease.
When a person has DM, some of the body’s immune cells may release antibodies. Antibodies that attack healthy blood vessels that supply your muscles are called autoantibodies. This may produce inflammation, leading to muscle damage and skin rash in patients with DM.
DM may cause skin and joint problems, and permanent damage to muscles.
Symptoms can:
Muscle weakness
Trunk, upper arms, hips, and thighs
Joint pain
Hands, wrists, and knees
Rash
Eyelids, chest, and upper back
Discoloration
Fingers, cuticles, and thighs
Red or violet bumps
Fingers, elbows, knees, and ankles
Not actual patient
Because DM has various symptoms, you will have a care team that may include neurologists, rheumatologists, dermatologists, pulmonologists, pharmacists, and nurses, among others. It’s important to talk about your symptoms with your healthcare professional. They will all work together with you on your DM treatment plan.

View helpful info on what to
expect before, during, and after
OCTAGAM 10% infusions


Learn about the clinical trial where patients saw improvement in DM symptoms with OCTAGAM 10%


View co-pay program info, where
eligible patients may pay as little
as $0,* and explore other helpful
materials and tools

*The OCTAGAM Co-Pay Program provides eligible patients assistance of up to $12,500 per year. Once a patient reaches the annual maximum benefit, patient is responsible for paying the remaining monthly out-of-pocket costs. The OCTAGAM Co-Pay Program is good only in the US and Puerto Rico. No membership fees. Federal and state health care beneficiaries are not eligible. Private insurance only. Eligibility and restrictions apply. See full Terms and Conditions on the Support and financial assistance page.
The following associations offer support, education, and advocacy to individuals and their families affected by DM, as well as other related conditions
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