One year ago I didn’t know what a cavitation was -let alone, heard of the term “Neuralgia Inducing Cavitational Osteonecrosis” (NICO, for short). But the world of electrodermal screening (otherwise known as “Electrical acupuncture according to Voll or EAV), which I have written about in previous columns, has given me new insights into the causes and cures of illness.