WebMD: Heat Rash miliaria or “prickly heat,” webmd.com WebMD WebMD common skin condition Full article >>> WebMD WebMD: Heat Rash - Topic Overview rash webmd.com 3-4 days WebMD: Heat Rash - Topic Overview WebMD: Heat Rash - Topic Overview WebMD WebMD: Heat Rash - Topic Overview Heat Rash A heat rash is also called prickly heat or miliaria Heat rash