A calm medical illustration showing a person experiencing a crawling skin sensation, symbolizing formication and its neurological causes.

Formication — When It Feels Like Something Is Crawling on the Skin

Formication is a medical term that describes the sensation of insects or tiny creatures crawling on or under the skin — even when nothing is there. People may describe it as: “It feels like ants are moving on my arms.” “Something is biting or crawling, but I can’t see anything.” This experience can be very …

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