Physiologyto have or feel a peculiar tingling or uneasy irritation of the skin that causes a desire to scratch the part affected:My nose itches.
to cause such a feeling:This shirt itches.
[Informal.]to scratch a part that itches.
to have a desire to do or get something:to itch after fame.
to cause to have an itch:His wool shirt always itches him.
[Informal.]to scratch (a part that itches):to itch a mosquito bite.
to annoy; vex; irritate:Her remarks itched me.
the sensation of itching.
an uneasy or restless desire or longing:an itch for excitement.
Pathologya contagious disease caused by the itch mite, which burrows into the skin (usually prec. by the). Cf. mange, scabies.
bef. 900; (verb, verbal) Middle English (y)icchen, Old English gicc(e)an; akin to German jucken, Dutch jeuken; (noun, nominal) Middle English (y)icche, Old English gicce, derivative of the verb, verbal