Hello Patricia, I was diagnosed with Addison’s disease in 1979 after losing all my energy, and my fair skin became very dark. I have been taking 10 mg hydrocortisone at breakfast, 5 mg at lunch and 5 mg at supper. I also take fludrocortisone every other day. This has maintained me for all of these years. My endocrinologist says my disease could have been caused by TB which I had in 1965. I had been told it is an autoimmune disease.