itch -
To scratch or rub so as to relieve an itch.
Wikipedia
Itch is an unpleasant sensation that causes the desire or reflex to scratch. Itch has resisted many attempts to classify it as any one type of sensory experience. Modern science has shown that itch has many similarities to pain, and while both are unpleasant sensory experiences, their behavioral response patterns are different.
OmegaWiki Dictionary
Ω
itch An unpleasant sensation on the skin that provokes the desire to scratch.