Sunburn

Sunburn is a form of radiation burn that affects living tissue, such as skin, that results from an overexposure to ultraviolet (UV) radiation, usually from the Sun. Common symptoms in humans and other animals include red or reddish skin that is hot to the touch or painful, general fatigue, and mild dizziness. Other symptoms include blistering, peeling skin, swelling, itching, and nausea.

Excessive UV radiation is the leading cause of (primarily) non-malignant skin tumors, which in extreme cases can be life-threatening.
Sunburn is an inflammatory response in the tissue triggered by the nucleic acid damage caused by UV radiation.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 2.0

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