Lower jaw and neck pain. Eagle syndrome?

I have pain and mild swelling in the lower jaw under ear, ear pain and side of the neck since may. Went to ENT in June. He said no Infection in sinus and ear. Went to dentist and he told me few treatment for tooth. Did those and still same symptoms. Neck pain and Swelling started after a month of jaw pain under ear. I have a small lump on the side of the neck which is burning constantly. Lump is small pea size. I had neck USG and it's normal. Went to tmj dentist and he said I have jaw joint issues and muscle tightness. He didn't know why I have neck pain and mild swelling. He said it could be referred pain. It hurts constantly and hurts to touch the side of neck. Constant feel of something stuck in throat and neck is so tight and stiff. Mild swelling in side of the neck, Ringing in ear  What could be reason for this. Ent told me to take sinus ct scan to check if I have any infection in sinus. Dentist said it could be Eagle syndrome. Does it indicates Eagle syndrome? Any inputs please.