Which vitamin deficiency may present with seborrheic dermatitis-like rash, glossitis, and cheilitis especially in severe malnutrition or chronic disease?
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Correct answer: Vitamin B6 (pyridoxine)
Vitamin B6 deficiency can cause dermatologic manifestations including seborrheic dermatitis–like rash, glossitis and cheilitis due to its role in amino acid and lipid metabolism affecting skin and mucosal integrity.
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