hyperpigmentation went away with b12 injection as a Primary Symptom of Vitamin Deficiency: A Case Report Reversible Hyperpigmentation in a Patient
Reversible Hyperpigmentation in a Patient With Vitamin B12 Deficiency Cureus Pigmentation in vitamin B12 deficiency masquerading Addison's pigmentation: A rare presentation PMC When vitamin B12 deficiency strikes early: A case of pernicious anemia with neurological features Kauvery Hospital Knuckle Pigmentation as an Early Cutaneous Sign of Vitamin B12 Deficiency: A Case Report PMC
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