A sunburn occurs when you are exposed to ultraviolet (UV) radiation. Summertime usually calls for plenty of time spent ...

though this can vary depending on the severity of the burn: With a first-degree burn, the top layer of the skin, known as the epidermis, is injured, resulting in redness and soreness. A first ...

First-degree burns are minor and do not often cause burn blisters. First-degree burns may feel painful, look red, and may swell slightly. A sunburn is an example of a first-degree burn ...