formication
Concise Oxford English Dictionary © 2008 Oxford University Press:
formication /ˌfɔːmɪˈkeɪʃ(ə)n/
▶noun a sensation like insects crawling over the skin.
– origin C18: from L. formicatio(n-), from formicare ‘crawl like an ant’.
'formication' also found in these Oxford entries:

