These spots often appear as raised, red, or itchy welts. Why it happens: When your immune system reacts to a substance it ...

This bacterium can cause an itchy, red rash known as "hot tub rash" and may also lead to swimmer's ear. The rash typically appears within hours or days, mostly around the stomach area, and usually ...

Bedbug bite sores appear as raised, itchy bumps ... Small brown spots will appear on bedding or furniture. This is bedbug poo. On white skin, bedbug bites usually look red. On black or brown ...