Hi, this could be swollen lymph node due to either ear or throat infection
in ears is mainly due to middle or inner ear
is the symptom of some underlying disease. Causes like wax, middle ear effusion, external ear infections, brain pathology all causes tinnitus or ringing.
To pin point the cause, an evaluation from ENT surgeon is must. A course of antibiotic like cephalosporins along with anti inflammatory drugs usually are prescribed for ear infection.