What causes you to have a headache for a week straight?

Chronic daily HA's: If you possess migraine, and use pain meds, you can develop a rebound process, and the headaches can exacerbate into a more constant process. If you have never had migraine, there is a question of a problem inside the head, or perhaps a medication reaction. Either way, have your physician review all of this.

Several possiblities: Location & type of ha can be very telling.Not enough info to be really helpful, here.Migraines, sinus ha-common causes of lasting ha.Infections, fevers, also common.Metabolic problems like low blood sugar, possible, but less likely as pain should go away after eating.Commonly, neck, upper back, or cranial bone dysf can cause long-term ha's.Osteopathic exam can help find cause.Manipulation may fix it.