Chafing, also known as friction dermatitis, is a superficial inflammatory skin condition caused by repetitive rubbing between skin surfaces, clothing, moisture, heat, or poorly ventilated materials. The condition commonly affects the inner thighs, groin, underarms, under the breasts, buttocks, feet, and areas exposed to prolonged friction during exercise, walking, sweating, or repetitive motion. Continuous mechanical irritation weakens the epidermal barrier, increases transepidermal water loss, disrupts keratinocyte stability, and promotes localized inflammatory signaling within the skin. Heat and moisture significantly worsen friction-related skin irritation. Sweat accumulation, salt residue, tight synthetic fabrics, prolonged exercise, obesity-related skin folds, dehydration, and impaired skin barrier resilience can all contribute to worsening irritation. Repeated friction increases inflammatory cytokine activity and oxidative stress while damaging superficial epithelial cells. Local irritation may trigger redness, burning, tenderness, swelling, itching, scaling, and skin sensitivity. Prolonged irritation may also weaken microbial balance on the skin surface and impair recovery of damaged epithelial tissues. A whole food plant-based dietary pattern rich in hydration-supportive fruits, vegetables, legumes, leafy greens, antioxidant-containing plants, and mineral-rich whole foods may help support skin barrier resilience, epithelial repair, hydration balance, collagen stability, and inflammatory regulation associated with friction-induced skin stress. Foods containing carotenoids, flavonoids, vitamin C compounds, anthocyanins, glucosinolates, potassium, magnesium, and polyphenols may help support oxidative defense systems and normal epithelial recovery pathways. Hydration-supportive foods including watermelon, cucumber, orange, strawberry, romaine-lettuce, celery, and citrus fruits provide water, electrolytes, antioxidants, and polyphenols linked to skin barrier stability and tissue hydration. Cruciferous vegetables such as broccoli and kale contain glucoraphanin, sulforaphane, carotenoids, and vitamin C compounds associated with antioxidant response pathways and epithelial cellular protection. Polyphenol-rich foods including blueberry, green-tea-brewed, turmeric-ground, and pomegranate provide flavonoids and anti-inflammatory phytochemicals associated with oxidative stress regulation and tissue resilience. Dietary patterns high in processed foods, oxidized oils, excessive sodium, refined sugars, alcohol, and inflammatory compounds may contribute to impaired skin hydration, endothelial stress, and increased inflammatory burden. Adequate hydration, mineral balance, antioxidant intake, and whole plant food diversity may help support healthy skin barrier recovery, epithelial integrity, and overall skin comfort during repetitive friction exposure.