ur·ti·cate 
(ûrtĭ-kāt′)
(ûrtĭ-kāt′)v. ur·ti·cat·ed, ur·ti·cat·ing, ur·ti·cates
v.tr.
To sting or whip with or as if with nettles.
v.intr.
To produce a stinging or itching sensation.
adj. (-kĭt, -kāt′)
Characterized by the presence of hives.
[Medieval Latin urticāre, urticāt-, from Latin urtica, nettle.]