The P-STIM is a micro-stimulation appliance for pain therapy that is worn comfortably behind the ear. Controlled by a microprocessor, it delivers small low-frequency, electrical pulses transmitted to the nerve endings in the ear. This stimulation results in a release of endorphins, the body’s natural pain killers. https://www.painfreenyc.com/treatment-options/pulse-stimulation-treatment-p-stim-specialist-doctors-Brooklyn/