I have itching in my jaw that subsides periodically for about a month now. no immediate cause is apparent such as hives/allergy or rash, redness. infl?

Itch: Since there's no obvious rash, swelling or redness associated with the itch, some superficial nerves may be irritable causing itch which is a relative of pain. What triggers the itch is mysterious. I would avoid applying cortisone type ointment to sooth the itch as permanent skin changes can result. Ask your pharmacist to recommend a nonsteroid ointment that you can use on your face if needed.