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A case of skin hyperpigmentation due to alpha-MSH hypersecretion
J S Pears1, R T Jung, W Bartlett
1Department of Medicine, University of Dundee Medical School, Ninewells Hospital, U.K.
Abstract:
A case is presented of generalized skin hyperpigmentation due to alpha-MSH hypersecretion from the pituitary that was most marked in the light-exposed areas. The patient also had secondary adrenal dysfunction, peripheral lymphadenopathy, streptococcal glomerulonephritis and malabsorption. Analysis of this patient's alpha-MSH using high-pressure liquid chromatography (HPLC) showed a novel acetylation profile compared to normal individuals and to patients with Cushing's disease and Nelson's syndrome. Glucocorticoid replacement therapy resulted in suppression of alpha-MSH hypersecretion and complete resolution of the illness.