For other uses, see Serial killer (disambiguation). A serial killer is typically a person who murders three or more people, usually in service of abnormal psychological gratification, with the murders taking place over more than a month and including a significant break (a cooling off period) between them.
Heat rash (prickly heat) is a red or pink rash usually found on body areas covered by clothing. It can develop when the sweat ducts become blocked and swell and often leads to discomfort and itching. Heat rash is most common in babies, but it may affect adults in hot, humid climates.
Some ways to prevent and treat heat rashes include: 1  Dusting the skin with anti-prickly heat powder.  Using a mild antimicrobial soap to reduce the number of germs blocking the sweat glands on the skin. This is one of the ways of reducing chances of developing prickly heat.