Percutaneous Needle Electrolysis (PNE) on the Concha of the Ear

Headache is a very frequent symptom among the world population, the adult population with an active headache disorder are 46% for headache in general, 11% for migraine, 42% for tension-type headache and 3% for chronic daily headache. There are different therapeutic approaches for the improvement of headache. Transcutaneous stimulation of the auricular vagal nerve is being used for the treatment of headache due to the involvement of the vagus nerve in inflammation and pain modulation. On the other hand, galvanic current has shown a measurable effect by increasing parasympathetic activity. The objective of this clinical trial is to stimulate the auricular vagal nerve with galvanic current using a needle as an electrode that will be inserted into the concha of the ear. As a tool for measuring results, infrared thermography will be used to observe changes in facial skin temperature, since patients with high sympathetic activity present a characteristic pattern of "cold nose" and/or "cold patch". In addition, variables that record changes in autonomic activity such as skin conductance and heart rate variability will be collected.