You searched for: “dolorimetry
dolorimetry (s) (noun) (no pl)
The technique of measuring pain sensitivity or pain intensity: Dolorimetry is a method of assessing intensity of pain perception in degrees ranging from unpleasant to unbearable by using heat applied to the skin as a gauge.

Dolorimetry is a system for measuring the sensitivity to pain produced by heat rays focused on an area of skin and recorded in "dols".