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».
Cluster headache is far less common than migraine headache or tension headache. Cluster headaches begin far more dramatically, however, and remain quite unique in their course over time. As the name suggests, the cluster headache exhibits a clustering of painful attacks over a period of many weeks.The pain of a cluster headache peaks in about 5 minutes and may last for an hour.luster headaches begin far more dramatically, however, and remain quite unique in their course over time. As the name suggests, the cluster headache exhibits a clustering of painful attacks over a period of many weeks. The pain of a cluster headache peaks in about 5 minutes and may last for an hour.