Medically reviewed by Brendan Camp, MD Polymorphic light eruption (PMLE), commonly known as a sun rash or sun poisoning, is a ...

Contact dermatitis is a common cause of a rash in one area. This is especially true of a small rash that will not go away. Contact dermatitis usually starts as raised red spots. It can change to ...

Swimmer's itch is caused by a very tiny parasite. You can only see it with a microscope. It gets into the skin of humans by mistake. The rash and itching are the body's allergic reaction to parasites ...

Drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome and haemophagocytic lymphohistiocytosis (HLH) are rare but severe immune-mediated diseases with overlapping clinical ...