Causes of Dermatomyositis
Scientists have not found out the exact causes of dermatomyositis. However, there are still many theories about why the condition occurs. The most commonly accepted assumption is that the immune system mistakenly attacks healthy blood vessels and muscles in the body. Another possible cause is a viral infection, which affects your skeletal muscles. Due to family history and genetic factors, some people can be more prone to developing dermatomyositis than others. [3]
