why is it that touching a spot on your body can cause a sensation on a completely separate part of your body?

Question

Example being poking a zit on the side of your face and then causing an itchy feeling on the back of your neck

In: 200

Answer 1

I qtip my ears and I get this odd tingle in my throat. Almost like an itching feeling. Also there is a spot on my back, if my wife hits it just right, my toes tingle like they are being scratched. It’s odd for sure. The qtip one though is most annoying because it usually forces me into a coughing fit.