Circa 1700, from Latin formica (ant) + -tion.
formication (countable and uncountable, plural formications)
- An abnormal skin sensation similar to that of insects crawling over or within the skin; a tactile hallucination involving such a sensation. A common side-effect of substance abuse, it can also be experienced with high fever, menopause, skin cancer, diabetic neuropathy, or herpes zoster.
- 1853, The Scottish Review
- Soon the formications and muscular debility returned, not alone, but accompanied with painful cramps and startlings in the feet and calves of the legs.