Are there effective alternative therapies for dermatomyositis?

Yes: Treatment typically begins with oral steroid however more potent immunosuppressants are often needed. See a rheumatologist.

Dermatomyositis: The disease is treated with anti-inflammatory medicines called corticosteroids and drugs that suppress the immune system. When your muscle strength gets better, your doctor may tell you to slowly cut back on your doses. However, most people with this condition must take a medicine called Prednisone indefinitely. http://www.ncbi.nlm.nih.gov/pubmedhealth/pmh0001842/#adam_000839.disease.treatment.

NO: "alternative" therapies involving naturopathic and herbal remedies will not work. Potent immune modifying drugs are needed. Delaying treatment with medicine proven effective can be devastating....And lethal.