Medical Definition of Formication
Formication: The illusion or hallucination that ants or other insects are creeping on or under the skin. Formication is a feature of some psychotic states as well as drug and alcohol abuse. From the Latin formicatio, from formicare meaning to creep like an ant. Not to be confused with fornication.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/9/2016
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