еше один момент - похожая гиперпигментация иногда описывается при дефиците витамина В12, например:
Nutr Clin Pract. 2017 Apr;32(2):275-276.
Reversible Facial Hyperpigmentation Associated With Vitamin B12 Deficiency.
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Vitamin B12 (cobalamin) deficiency is common in developing countries. Its dermatologic manifestations include hair and nail changes and glossitis. Cases of generalized hyperpigmentation associated with vitamin B12 deficiency have rarely been reported. Localized hyperpigmentation is less frequently described, affecting palms, soles, and flexural areas. We report a rare case of reversible melasma-like cutaneous hyperpigmentation associated with pernicious anemia and discuss the possible mechanisms of this association.
теоретически, если у Вас развился атрофич. гастрит, то сочетанное появление дефицитов железа и В12 возможно
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