What is Sunburn?
Sunburn is a type of thermal skin injury caused by overexposure to ultraviolet (UV) radiation, usually from the sun, but also from artificial sources like tanning beds. It results in inflammation of the skin and can range from mild redness to severe pain, swelling, blistering, and skin peeling. Sunburn is the body’s immediate response to cellular damage caused by UV rays, and repeated burns increase the risk of long-term skin damage.
How Does the Wound Happen?
Sunburn occurs when skin is exposed to the sun’s UV rays for too long without adequate protection. The skin absorbs the UV radiation, which damages the DNA in skin cells. This triggers an inflammatory response, resulting in redness, heat, and discomfort.
Common situations that lead to sunburn include:
- Staying outdoors during midday hours when UV radiation is strongest
- Failing to use sunscreen or using an insufficient SPF
- Spending extended time at the beach, pool, or in the snow (which reflects UV rays)
- Wearing minimal or no protective clothing, hats, or sunglasses
- Using tanning beds or lamps
Sunburn typically appears a few hours after sun exposure and peaks within 24 to 36 hours. The affected skin may feel hot, tight, and painful to the touch.
What Happens If Not Treated?
If sunburn is not treated properly, it can lead to short-term discomfort and serious long-term consequences:
- Increased Risk of Infection: Severe sunburns that blister or peel can create open areas on the skin, making it easier for bacteria to enter.
- Prolonged Pain and Inflammation: The burning sensation, swelling, and skin sensitivity may worsen or last longer without soothing care.
- Dehydration and Heat Exhaustion: In cases of large surface area burns, the body can lose fluids, leading to dehydration or heat-related illness.
- Skin Peeling and Scarring: Without care, peeling skin can become irritated, and deeper burns may scar or discolor.
- Photosensitivity: The skin becomes more sensitive to future sun exposure, increasing the risk of more burns.
- Premature Skin Aging: Repeated sunburn accelerates signs of aging like wrinkles, leathery texture, and sunspots.
- Increased Skin Cancer Risk: Cumulative UV damage is one of the leading causes of skin cancers, including melanoma, especially in individuals with frequent or severe sunburns.
