Hello and welcome to Healthcare Magic. Thanks for your query.
There acould be a few possibilities for the electric shock-like sensations which you are experiencing:
1) Anxiety-related: anxiety can manifest with a variety of physical symptoms and such strange sensations are fairly commonly reported.
2) Due to the withdrawal effects of meth
3) Due to some other medical problem - like a peripheral neuropathy
These sensations are not fatal, but it would be a good idea to see a doctor to have an evaluation, to find out the likely cause. Since you say that you also have other stress
related issues and possibly underlying anxiety, I would also suggest that you try relaxation exercises like deep breathing, progressive muscle relaxation
Wish you all the best.
Dr. Jonas Sundarakumar