As the pressure increases, the eardrum may break open (rupture). Damage to the eardrum can also occur from: 1  A very loud noise close to the ear, such as a gunshot. 2  A rapid change in ear pressure, which may occur when flying, scuba diving, or driving in the mountains.  Foreign objects in the ear.
Constant headache: Introduction. Constant headache: Constant headache is a steady and continual discomfort in the head. See detailed information below for a list of 9 causes of Constant headache, Symptom Checker, including diseases and drug side effect causes. Â» Review Causes of Constant headache: Causes | Symptom Checker Â».
Tension-Type Headache. These common headachesâexperienced by three out of four adultsâare typically mild to moderate, characterized by dull, squeezing pain on both sides of your head. Though these headaches are all-too-common, they donât usually stick around long, lasting between 20 minutes and two hours.