individuals might develop hyperpigmentation or a rash. B12 is vital for maintaining healthy skin cells, so a deficiency can disrupt normal skin function and contribute to visible changes.” ...

dry or rash-prone skin, hair loss, brittle nails, mouth ulcers, numbness, blurred vision, and mood irritability. Vitamin B12 deficiencyVitamin B12 deficiency or iron deficiency in the body can be ...