rash
noun /ræʃ/
  /ræʃ/
 - [countable, usually singular] an area of red spots on a person’s skin, caused by an illness or a reaction to something
- I woke up covered in a rash.
 - I come out in a rash (= a rash appears on my skin) if I eat chocolate.
 - The sun brought her out in (= caused) an itchy rash.
 - a heat rash (= caused by heat)
 
Extra ExamplesTopics Illnessc1- He has a slight rash on his chest.
 - Some pesticides can cause rashes and burns.
 - The rash most commonly appears on the back.
 - When I'm stressed I break out in a rash.
 
Oxford Collocations Dictionaryadjective- skin
 - itchy
 - red
 - …
 
- have
 - break out in
 - come out in
 - …
 
- appear
 - come out
 - develop
 - …
 
- rash on
 
 - [singular] rash (of something) a lot of something; a series of unpleasant things that happen over a short period of time synonym spate
- a rash of movies about life in prison
 - Rising prices are the result of the recent rash of strikes in the steel industry.
 - There has been a rash of burglaries in the area over the last month.
 
 
Word Originnoun early 18th cent.: probably related to Old French rasche ‘eruptive sores’; compare with Italian raschia ‘itch’.