Addison's disease n a destructive disease marked by deficient adrenocortical secretion and characterized by extreme weakness, loss of weight, low blood pressure, gastrointestinal disturbances, and brownish pigmentation of the skin and mucous membranes
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a syndrome due to inadequate secretion of corticosteroid hormones by the adrenal glands, sometimes as a result of tuberculous infection. Symptoms include weakness, loss of energy, low blood pressure, and dark pigmentation of the skin. Formerly fatal, the disease is now treatable by replacement hormone therapy.
T. Addison
Medical dictionary. 2011.