What do i do if I've been shocked by 220 and my hand is now swollen and tingly?

Low voltage injuries are characterized as currents of 500 volts or less. Generally it's limited to a small area with deep tissue or nerve damage. The damage area from those types of electrical burns after the edema (Swelling), goes down will appear sunken or hollowed. And the tingling (numbness) you feel now will disappear