Burn from the sun
A sunburn is reddening of the skin that occurs after you are exposed to the sun or other ultraviolet light.
The first signs of a sunburn may not appear for a few hours. The full effect to your skin may not appear for 24 hours or longer. Possible symptoms include:
While the symptoms of sunburn are usually temporary (such as red skin that is painful to the touch), the skin damage is often permanent and can have serious long-term health effects, including skin cancer. By the time the skin starts to become painful and red, the damage has been done. The pain is worst between 6 and 48 hours after sun exposure.
Sunburn results when the amount of exposure to the sun or other ultraviolet light source exceeds the ability of the body's protective pigment, melanin, to protect the skin. Sunburn in a very light-skinned person may occur in less than 15 minutes of midday sun exposure, while a dark-skinned person may tolerate the same exposure for hours.
Keep in mind:
Factors that make sunburn more likely:
Kaplan LA. Exposure to Radiation from the Sun. In: Auerbach PS. Wilderness Medicine. 5th ed. St. Louis, Mo: Mosby; 2007: chap. 14.
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