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».
A headache commonly occurs alone, but may occur with other symptoms. Associated symptoms can be important clues for identifying the underlying cause of a headache. Symptoms that may occur with headache include blurry vision, nausea, vomiting, fever, neck pain, neck stiffness, and increased sensitivity to light or noise.eadache. A person with a headache has discomfort beneath the scalp, forehead, or behind the eyes. Headaches may occur occasionally, or headaches may become chronic by occurring frequently. The most common cause of headache is a muscle tension headache.