While there are several degrees of burns, sunburns are generally either first-degree or second-degree, depending on the size of the burn and the depth of the UV radiation damage. Most sunburns are first-degree burns and typically occur with redness, soreness, tightness, and warmth in the affected area. First-degree sunburns can also cause mild swelling and blistering. While most first-degree sunburns do not require medical attention, you may want to consult your doctor or dermatologist about proper skincare for the injured skin. Sunburn becomes a second-degree burn when UV radiation damages both the epidermis and the dermis, or the outer layer of skin and the layers of skin beneath the surface. Second-degree sunburns can take several weeks to heal and typically require medical attention for proper care and treatment. Some symptoms of a second-degree sunburn include the following: • Blisters and swelling covering a significant area of skin • Significant discomfort and pain • Skin that appears wet, shiny, and dark or deep red • White discoloration within the burn