What is formication?

Question

a friend saw the term in a chatroom re diabetic neuropathy; she explained it as a rare combination of the four types of neuropathy and thought it sounded like what I am expericing

Answer 1

Formication is a somewhat unusual, but medically well-known, abnormal sensation. This sensation closely resembles the feeling of insects crawling on and/or under the skin, and can also include sensations which resemble those of insects stinging or biting.

Answer 2

On first glance, I thought it was what the Republican Party wants to do to America.