Do get to your GP as soon as you can - it's also a symptom of stroke.
On the other hand, I think there is some way that high blood glucose can cause it. I don't know exactly how - I need Phoenix, as always! - but a friend's husband, who is typical male when it comes to visiting the GP (he won't :roll: ), had his left arm suddenly go numb. They went to A&E, where he was admitted - no stroke, but very high BGs and diagnosed Type 2. Apparently the numb arm was to do with the high BGs.
Don't ignore it.
Viv 8)