12 Nutritional Deficiencies and the Visual Signs They Produce

4. Vitamin C Deficiency - Scurvy's Distinctive Markers

Vitamin C deficiency, historically known as scurvy, produces some of the most dramatic and recognizable visual signs among nutritional deficiencies. The skin develops a characteristic rough, bumpy texture known as follicular hyperkeratosis, where hair follicles become plugged with keratin, creating a "goose bump" appearance that doesn't resolve with warming. Hair becomes fragmented and corkscrew-shaped, particularly noticeable on the arms and legs, as vitamin C is essential for proper collagen formation in hair structure. Petechial hemorrhages appear as small, pinpoint red or purple spots on the skin, especially around hair follicles and on the lower legs, due to capillary fragility. The gums become swollen, purple, and spongy, bleeding easily even with gentle touch, and teeth may become loose or fall out entirely. Wounds heal poorly and may reopen, while old scars may break down and reappear. The skin develops a waxy, pale appearance, and bruising occurs with minimal trauma, often appearing as large, dark purple patches. Joint swelling and pain become visible through altered gait and positioning. These manifestations occur because vitamin C is essential for collagen synthesis, and without adequate levels, the structural integrity of blood vessels, skin, and connective tissues deteriorates rapidly.