The easiest way to get an idea of this at
home is by checking for swelling or redness of the
gums and if his glands are
swollen. Typically for me, the first glands to swell are the Submandibular gland located right under both sides of the jaw. If you notice any of these, go to your doctor and tell him that you think you may have an infection and get the antibiotics. That, alone, can cause the full head pain.
When it comes to pain killers, what kinds is he taking?