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Addision's disease is increased pigmentation in skin and mucous membrane varying from light to dark brown in colour.The pigmentation is due to increased pituitary MSH and ACTH secretions.At first there is tanning noticed following sun exposure.Afterwards,there is increased pigmentation at pressure points(elbow),in the areas normally pigmented(areola,old and new scars etc) and also in mucous membranes.Rarely,there may be areas of vitiligo.

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14y ago

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