Other Headache Types: Medication Overuse Headache (MOH)
Alternate terms for MOH, besides rebound headache, include drug-induced, and analgesic-dependent headache. There is on-going debate about whether medication overuse is a cause or consequence of chronic daily headache.

Analgesics (prescription or over-the-counter medications) are often used to control pain including migraine and other types of headaches. When overused, these analgesics can have the opposite effect and actually help perpetuate the headache process. The headache "rebounds" as the last dose wears off, leading the sufferer to take more and more pills. The patient develops a tolerance to pain relievers and needs more medication to get the same level of pain relief. In U.S. headache clinics, up to 80% of patients with chronic daily headache overuse pain medications.