77 citations
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August 1986 in “Archives of Dermatology” Vitamin B12 deficiency can cause skin and hair color changes, which are reversible with treatment.
16 citations
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January 2008 in “Acta dermato-venereologica” Vitamin B12 deficiency can cause skin darkening and increased blood vessels, but treatment can improve symptoms.
11 citations
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August 1986 in “Archives of Dermatology” Vitamin B12 deficiency can cause skin and hair color changes, which can be reversed with treatment.
Botulinum toxin shows promise for treating scalp sweating but not for hair growth.
50 citations
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November 2010 in “Otolaryngologic Clinics of North America” Recognizing oral symptoms can help diagnose and treat blood and nutritional diseases early.