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 headaches 7,8. Tension-type headaches are the most common form of primary headache. They are described as feeling like a tight band around the head, with a constant, dull ache being felt on both sides.Sometimes the pain spreads to or from the neck. They normally begin slowly and gradually in the middle of the day.igraines 9. Migraine is the second most common form of primary headache and has been ranked as the seventh-highest specific cause of disability worldwide. 5 They can last for any amount of time between a few hours and 2-3 days.