Hi and thanks for question,
Jaw tenderness around that area could imply lots of things. First, it could be a chronic inflammation, and a rare type of rheumatoid arthritis
dpoes actually presents as such. Doing an a Rheumatoid factor
dosage, ESR, CRP, Complete blood count
, HLA27 could be good guides in excluding this diagnosis and other autoimmune diseases.
Secondly, depending on your dental history, this could also be an indication of an early stage of a bone infection
or osteomyelitis. Its not that rare, and most of the time is discovered in the chronic phase. A tumoor of the ENT sphere, due to compression of nerves or blood vessels could produce such a symptomatology. A Head CT scan is most appropriate in eliminating a tumour. These are conditions that are not that very rare.
I suggest you could start with taking an appointment with an ENT specialist
for a proper evaluation .
Thanks for your questions and best of health.