When the skin is overexposed to the ultraviolet rays of the sun a sunburn can occur. The symptoms of a sunburn can take up to 24 hours to appear. The skin can be red, warm, tender, blistered, and swollen.
Update Date 4/14/2015
Updated by: Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.