Having hand rash
and tinggling is indicating that you might have missed the vein and did the shot in the arteries. Another cause could be related to high dose of meth shot.
I'd suggest to apply cold
compresses to the site of injection and to stop taking meth, at least until improvement.
You can also apply cold compresses to the rash area, and can ask for OTC anti-hystamine at your local drug store.
Once again, try not to give meth shots anymore, it is a pity to waste your health and wealth.
Hope it helped!