adverb, adverb taking the 'to' particle
Describes a repeated, mild prickling or stinging sensation, often on the skin. Used adverbially, frequently with する or と.
セーターを着ると、肌がちくりちくりする。
When I wear a sweater, my skin prickles.
虫に刺されたところがちくりちくり痛む。
The place where I was bitten by an insect stings.