Would you speak to your GP about this? I sometimes (maybe every few months) develop a very numb patch, over the course of the day it spreads but only to one side of my body/face. Today it started on my hip, now on my thigh, stomach, round my side, my cheek, mouth. I have a funny feeling too, not a headache but just really tired and disoriented, the eye on that side feels funny too. The affected places feel almost like they're badly bruised, almost a pins and needles feeling.