As strange as it sounds, many medications which seem to relieve
headaches can actually cause more headaches later on. Also
known as rebound headaches, medication overuse headaches can
occur when you treat your headaches too often.
According to the International Headache Society criteria,
treating with most headache relieving medications for 10 or
more days per month, for three or more months, can cause headaches
to become chronic daily headaches. This may be because these
medications undermine the brain’s ability to control
pain signals.
Medication overuse headaches can be caused by many of the
over-the-counter headache remedies as well as prescription
pain relievers.
If your headaches are bad enough that you have to treat them
that often, you probably need to be taking a headache preventative
medication.