Headaches can have causes that aren't due to underlying disease, examples include lack of sleep, an incorrect eyeglass prescription, stress, loud noise exposure, or tight headwear (:
Conditions that might cause nonprimary chronic daily headaches include: Inflammation or other problems with the blood vessels in and around the brain, including stroke. Infections, such as meningitis. Intracranial pressure that's either too high or too low.
