itch

have a strong desire or urge to do something

“She is itching to start the project”

an irritating cutaneous sensation that produces a desire to scratch

a contagious skin infection caused by the itch mite; characterized by persistent itching and skin irritation

“he has a bad case of the itch”

scrape or rub as if to relieve itching

a strong restless desire

have or perceive an itch

“I'm itching--the air is so dry!”