Did you mean epistasis (a genetics term) or epistaxis (a nosebleed)?

You likely mean paresthesia.

It is an abnormal skin sensation such as tingling, pins and needles, prickling, burning, or numbness, often in the hands or feet. It commonly occurs temporarily when a limb “falls asleep” from pressure on a nerve. Persistent or recurrent paresthesia can result from nerve compression, diabetes, vitamin deficiency, or neurological conditions.

If it begins suddenly with weakness, facial drooping, difficulty speaking, severe headache, or loss of balance, seek emergency care because it can indicate a stroke.

Hyperesthesia means increased sensitivity to sensory stimuli, especially touch. Normal sensations, such as light touch, clothing, warmth, or cold, may feel unusually intense or unpleasant.

Textbook definition: hyperesthesia is “increased sensory experience with a stimulus.” - Bradley and Daroff's Neurology in Clinical Practice, section “Sensory Localization.”