A sensation felt on an area of the skin that causes a person or animal to want to scratch said area.

A constant teasing desire or want.

(intransitive, stative) To feel itchy; to feel a need to be scratched.

(intransitive) To have a constant, teasing urge; to feel strongly motivated; to want or desire something.

(transitive) To cause to feel an itch.

(transitive, colloquial) To scratch or rub so as to relieve an itch.