brain, spinal cord, and nerve disorders
Overview of Headache
Causes of Headache
Although headaches can be painful and distressing, they are rarely due to a serious condition. Headaches can be divided into two types: Primary headaches:Not caused by another disorder Secondary headaches:Caused by another disorder Primary headache disorders include Migraines None Cluster Headaches and other trigeminal autonomic cephalgias, including chronic paroxysmal hemicrania, hemicrania continua, and Tension-Type Headaches None Trigeminal autonomic cephalgias are rare. Secondary headaches may result from disorders of the brain, eyes, nose, throat, sinuses, teeth, jaws, ears, or neck or from a bodywide (systemic) disorder. Thetwo most common causes of headacheare primary headaches: Tension-Type Headaches (most common overall) Migraines None Less often, headaches are due to a less common primary headache disorder called Cluster Headaches or to one of the many secondary headache disorders (see table Fever can cause headaches, as can many infections that do not specifically involve the brain. Such infections include Lyme Disease , or stop taking pain relievers (analgesics) after using them for a long time (called Medication Overuse Headache ). Contrary to what most people think, eye strain and high blood pressure (except for extremely high blood pressure) do not typically cause headaches. 