A lot vs. Alot: 9 Grammatical Pitfalls
"itching of the skin without visible eruption" [Klein], 1650s, from Latin pruritus, past participle of prurire "to itch" (see prurient). Earlier via Old French in form prurite (early 15c.). Related: Pruritic.
pruritus pru·ri·tus (pru-rī'təs)
Severe itching, often of undamaged skin.