Formication, or parasitosis, is the sensation of having insects crawling on or under the skin. Formication is a tactile hallucination, which means a person feels a physical sensation without a ...

If you feel like something is crawling on your skin without a physical cause, you may be experiencing a tactile hallucination. Certain health conditions, medications, and drugs may cause it.

Formication, essentially a tactile hallucination, is an abnormal skin sensation similar to that of insects crawling over or within the skin. From the Latin formicare meaning "to creep like an ant," ...