What causes dermatomyositis?

What causes dermatomyositis?

Experts aren’t certain what causes dermatomyositis, but a few causes might include:

• Genetic factors: Some studies indicate dermatomyositis is a genetic disorder.
• Autoimmune issues: Dermatomyositis is similar to many autoimmune diseases that make your body's immune system attack healthy tissue.
• Viral infections: There’s some evidence that suggests a viral infection can trigger dermatomyositis in some people, even after the infection itself is cured.
• Environmental factors: Studies have found that living in areas with higher pollution or lower air quality might make you more likely to develop dermatomyositis.