I have tingling one day and then, not again for a week. No rhyme or reason...
The muscles and the nerves in the jaw and face are extremely complex and intricately connected. As a result, if your bite is misaligned, the nerves and muscles may also be affected. This can result in the muscles throughout your face, jaw, neck and shoulders to spasm, pinching the nerves that lead down your arms.
What happens? Numbness and tingling in your arms, fingers and hands.
Some individuals that battle TMJ have a pricking, tingling or numbing in their hands and fingers. Many times they also report it causes a reduction in their grip strength.
If you are experiencing any of these symptoms, you should be properly diagnosed and treated.