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Disease, addison's

Long-term underfunction of the outer portion of the adrenal gland. In medical terms, chronic insufficiency of the adrenal cortex. This may be due to a number of different insults to the adrenal including physical trauma, haemorrhage, and tuberculosis of the adrenal, and destruction of the cells in the pituitary gland that secrete acth (adrenocorticotropic hormone) which normally drives the adrenal. Addisons disease is characterised by bronzing of the skin, anaemia, weakness, and low blood pressure. The U.S. President J.F. Kennedy is said to have had addisons disease. Named after the British physician thomas Addison (1793-1860).