What causes chronic ear pain and migraines together?

Mastoiditis?: Migraine is your body telling you it is stressed. You need to be aware of possible cause. For some it can be emotions, for others foods, and others allergies. With you there may be inflammation in the region of the ear that could be serious. Chronic inflammation of ear structures may be a cause. A thorough medical and ENT evaluation would be appropriate.

Tough problem: Chronic ear pain tends to be a frustrating problem as it is difficult to diagnose and management strategies do involve trial and error method at times. Temporomandibular disorders often cause chronic ear pain. Other causes include inflammation of the jaw joint/s, headache disorders, salivary gland disease, and ear infections. Some medical illnesses can also exhibit ear pain.