I am not having this right now, however, I have at certain phases, pre-diagnosis. it was not long lasting and went away on its own. I've read zinc deficiency often causes this. It can come from malabsorption, diet, or, I think, too much copper can give a zn deficiency, or maybe it's the other way around. try taking some zinc gluconate, maybe, can't hurt. it can also be associated with certain kinds of faulty signalling in the brain, but that's very rare.