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, 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 ...

I have put this piece together as a result of the question asked by one of the ardent readers of my column. She asked, ‘Please what can be the cause of a moving object like worms in several parts of ...