In simple terms, Medication Overuse Headache (MOH), also called a rebound headache, is a condition where a treatment meant to stop pain starts is actually causing the pain. It happens when migraineurs with frequent headaches take pain medication—even common over-the-counter pills—too often.
The Simple Cause: Taking Pills Too Often
- The Rule of 10 or 15: If you take any form of acute painkiller (analgesia) for your headaches on 10 to 15 or more days per month for at least three months, your body and brain can get hooked on the medication.
- The Change: The brain, which is already sensitive in people with migraines, begins to rely on the medication. When the drug wears off, the brain “rebounds” by triggering another headache, often making the original migraine condition much worse, turning episodic (occasional) migraines into a chronic (almost daily) problem.
- The Trap: When people use painkillers frequently, their episodic migraine condition may essentially chang into chronic migraine because of the frequent use of the drugs—that’s why it’s called Medication Overuse Headache (MOH).
How the Headache Changes
Essentially, the headache is no longer just the migraine; it is the migraine plus the withdrawal effect from the medication in between the doses.
The quality of the headache itself changes, which can make the condition confusing to manage:
- It Loses the Migraine Feel: The pain often stops feeling like a sharp, throbbing migraine.
- It Becomes Dull and Constant: The headache becomes a dull, constant, non-throbbing pain, often feeling more like a tension-type headache.
- The Vicious Cycle: Patients often get caught in a cycle: they treat less severe headaches with common painkillers (like Tylenol or ibuprofen) and save their stronger prescription drugs for the worst days. This frequent use of the milder pills actually makes the overall condition worse and harder to break.
How to Treat Medication Overuse Headaches?
It is important to consult a headache specialist to receive individualised practical advice and treatments to overcome Medication Overuse Headache (MOH).