Addison's disease is an endocrine disorder where your body is unable to produce adequate amounts of steroid hormones. As such, patients with Addison's disease require hormone replacement therapy.
If you have the disease there are lots of natural methods you can try to limit symptoms. Check out this video to learn how to treat your disease by limiting potassium in your diet and adding salt to foods. Doing so will decrease symptoms like vomiting, diarrhea, and muscle pain.