Sinusitis, refractive errors of the eye, migraine, cluster headaches, brain tumors
and aneurysms,
high blood pressure, tension headaches, temporal arteritis, pinched cervical spinal nerve, TMJ, poor or disturbed sleep etc are several causes of headaches. Dental pain and ear ache due to infection or impacted wax can cause similar symptoms. Needless to say, a persisting headache should be investigated. Please consult a headache and migraine specialist to rule out these causes one by one.