Headaches have occurred to almost everyone at some point. These headaches are known to range widely in their pain. Headache Treatments are researched across the medical community, but causes remain a mystery. The medical community has broken headaches into a few easily classified categories. Primary headaches are by far the most common variety, while cluster and secondary headaches occur on a far rarer basis. Most headaches have no life threatening significance, although secondary headaches can be a sign of a more serious neurological disorder.