/ Thesaurus / P Synonyms of prickly heat Find synonyms for: Noun1. prickly heat, heat rash, miliaria, rash, roseola, efflorescence, skin rashusage: obstruction of the sweat ducts during high heat and humidityWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ablution Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language