Paresthesia is a condition that affects the senses causing a person to experience feelings such as numbness and tingling sensations in the hands and feet as well as crawling, itching, burning, or prickling sensations on the skin. There are different types of paresthesia, with some affecting specific parts of the body such as the hand and or feet. Formication is a type of paresthesia. The term formication is derived from the Latin word formica which means an ant. Formica is also the ant genus in the family Formicidae. Accordingly, formication is a sensation that small insects are crawling on or under the skin. It is a type of tactile hallucination meaning a sensation that something is crawling on or under the skin, when in actuality there is nothing.