I have 2 bruises on my arm and I feel an electric shock in my thumb when I move it?
Summing the bruises are due to some form of trauma, the sensation you feel
is secondary to pressure on the nerve sheath from the bruise. A bruise is a
collection of blood in the tissues. This presses on the surrounding
structures. YOur symptoms should resolve as the bruise resolves, usually
within a week. IF it persists, see a physician for an exam..