The general belief about referred pain is that sensory input from the viscera converges on the same nerves that receive input from the skin (dermatomes), so perceptually the pain is felt in the area where these skin nerves supply.As for the situation you described, I am not so sure this can be referred pain. The nerves supplying the jaw come from the brain (cranial nerves) and not from spinal cord, which supplies the viscera. I am thinking instead it is actually due to some generalized stimulation of the sympathethic nerves, although I don�t know exactly what.[This message has been edited by flux (edited 05-01-99).]