Thanks for putting your query up at HealthCareMagic. I am sorry that your daughter has dermatomyositis. Dermatomyositis (DM) is a connective-tissue disease that is characterized by inflammation of the muscles and the skin. While DM most frequently affects the skin and muscles, it is a systemic disorder that may also affect the joints, the esophagus, the lungs, and, less commonly, the heart. The mechanism is immune-mediated damage of microscopic vessels of skin and muscles and gives rise to muscle atrophy. The diagnosis can be confirmed by muscle biopsy, EMG,and blood tests. This disease has no known cure but the immune reactions that result in the disease, can be kept in control using certain medicines. She therefore needs the medicines and it is no need to worry about side-effects as without them the condition would worsen even further. Dermatomyositis is often associated with celiac disease and hence a gluten-free diet is recommended. In other words avoid wheat based products altogether. It is believed that certain dietary regimens like Paleo Diet are beneficial. Okay To Eat: Fruits, Vegetables, Lean Meats, Seafood, Legumes, Nuts & Seeds and Healthy Fats having omega-3 fish oil. Avoid: Dairy, Grains, Processed Food & Sugars, Starches and Alcohol. Eating your food as close to raw as possible is recommended. Hope that helps. Feel free to revert back with further queries if any.