Unseen Symptoms of Vitamin Deficiencies to Watch For

17. Burning Mouth Syndrome and B-Vitamin Deficiency

A tingling, burning, or scalding sensation in the mouth—especially on the tongue—without an obvious cause may be linked to deficiencies in B-vitamins like B1, B2, B6, or B12. This condition, known as Burning Mouth Syndrome, is often misattributed to dental issues or spicy foods, but nutrient imbalances are a common trigger. These vitamins are essential for nerve health and proper cell function in the mouth. When deficient, nerve endings may become overly sensitive or irritated. If you’ve ruled out oral infections or allergies and still experience a burning mouth, it’s worth investigating your vitamin B intake through a blood panel.

18. Goosebump-Like Skin and Vitamin A Deficiency

Rough, bumpy skin that resembles goosebumps—especially on the backs of the arms, thighs, or cheeks—may be a condition called keratosis pilaris. While harmless, it can be linked to a deficiency in Vitamin A, which supports skin cell turnover and health. When levels are low, dead skin cells accumulate and clog pores, leading to this sandpaper-like texture. Many people try to treat the bumps topically, but the root cause may lie deeper. Incorporating more Vitamin A-rich foods like sweet potatoes, carrots, and dark leafy greens—or taking a supplement under medical guidance—can help smooth the skin from the inside out.