Thanks for writing to us.
The electric shock
that you had seems to have caused a mild nerve injury
which is causing the pins and needles sensation. You need not worry. This is a self limiting damage and recovery is expected in 2-3 weeks.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Praveen-Tayal
Dr. Praveen Tayal