seen in primary Addison's Disease is caused by an excess of ACTH secreted by the pituitary gland in an effort to stimulate the adrenal gland to produce cortisol. This can be an all-over tan or in areas of pressure such as the waistline, braline, pantyline, knuckles, knees, toes, or elbows. Also seen
in autoimmune Addison's Disease is Vitiligo, or areas of pigment loss. http://www.umm.edu/endocrin/addison.htm
The craving for salt
is due to a lack of aldosterone, another hormone produced by the adrenal glands, which controls sodium, potassium and other electrolytes. The medicine prescribed for this problem is Florinef.