When a tension headache strikes, most people head for their medicine cabinet or drugstore, looking for an over-the-counter painkiller such as acetaminophen or ibuprofen.
But if you get them often, that plan can backfire.
“Frequent use of these drugs can cause rebound headaches,” says Priyanka Chaudhry, MD of the Baylor Neuroscience Center Headache Center.
There can also be side effects, as with any medicine. Taking too much acetaminophen is bad for your liver, and overdoing ibuprofen can upset...