The generalized skin hyperpigmentation (GHPT) is visible in a number of diseases such as Addison’s disease (AD). We present an 11-year-old hyperpigmented girl who arrived at our hospital with a suspicion of AD. She had diffuse grey-brownish discoloration of the skin present since birth. Adrenal function tests excluded primary adrenal failure and ACTH excess. Skin biopsy showed an increased pigmentation of the epidermal basal layer and melanin aggregates within melanophages of the stratum papillare. Molecular analysis of MC1R gene did not show any defects. This case may represent a rare and novel variant of a familial progressive disorder of hyperpigmentation.