Why does sunburn cause skin redness?

Skin Redness is a very common presentation of Sunburn. Inflammatory signals bring immune activity to injured tissue, which can make the area look red, feel warm, and become tender or tight. The colour may be easier to see on lighter skin and may look dusky, purple, or darker on deeper skin tones. Redness can appear after the exposure and may later be followed by peeling or blisters. Other causes include irritation, allergy, infection, and inflammatory skin conditions.

Move out of the sun and cool the skin with a cool shower or clean damp cloth. Apply a gentle, fragrance-free moisturiser while the skin is slightly damp, and drink fluids. Wear loose clothing and avoid rubbing, exfoliating, fragranced products, and further tanning. Use a sunscreen suited to your skin when outdoors, following the product directions, and cover the area with clothing or shade.

Seek medical advice for severe pain, extensive redness, blistering, swelling, fever, chills, dizziness, confusion, repeated vomiting, or difficulty drinking. Get prompt assessment if redness is rapidly spreading, increasingly hot, draining pus, or forming red streaks, as these changes can indicate infection or another problem. Persistent redness without a clear sun exposure also merits review.

Does the pattern fit sunburn? Which cooling and moisturising products should I use? How can I recognise infection? What sun protection is practical for my skin tone and routine?