It is very rare that people are allergic to the sun, but the allergy does exist. It is said that only 300 people in the world are allergic to the sun. It’s medically known as solar urticaria. There is also a more serious condition known as erythropoietic protoporphyria. When exposed to direct sunlight, the immune system activates inflammatory cells that are within the skin. Most people allergic to the sun are told to limit their exposure and to wear sun block. Others need to wear special clothing... read more
