Bacteria in the gut have been implicated in autoimmune diseases, like lupus, that don't primarily affect the gastrointestinal ...

Medically reviewed by Brendan Camp, MD Polymorphic light eruption (PMLE), commonly known as a sun rash or sun poisoning, is a type of photodermatosis triggered by an immune system reaction to the ...

Spider mites appear as rashes caused by issues with the skin’s arterioles. These are small arteries that supply blood and ...