June 18, 2026

Medication-overuse headache: the trap of treating too often

There is a cruel twist buried in migraine care: the medicines that stop an attack can, taken too often, become part of the problem. This is medication-overuse headache — sometimes still called rebound headache — and it's one of the most important patterns a migraine diary can help you notice early, precisely because it creeps in without any single day feeling like a mistake. The International Classification of Headache Disorders (ICHD-3) defines it formally, and understanding the thresholds is genuinely empowering, not frightening. This guide is informational; it is not a diagnosis of your headaches.

What medication-overuse headache is

Medication-overuse headache (MOH) is a headache that develops or worsens when acute — as-needed — headache medication is used too frequently over a sustained period. The mechanism isn't fully understood, but the pattern is well recognised: frequent acute treatment can lower the threshold for the next headache, so you treat more often, which lowers the threshold further. It's a loop, and the loop is what makes it hard to see from inside. The Migraine Trust describes it as one of the more common and most reversible reasons a person's headaches quietly become more frequent over months.

The numbers that matter

MOH is defined by how many days a month you take acute medication, sustained for more than three months — not by the total number of pills, and not by any single heavy week. The recognised thresholds are:

10 or more days a month for triptans, ergotamines, opioids, or combination painkillers (for example, those combining paracetamol, aspirin, and caffeine)
15 or more days a month for simple painkillers used alone, such as paracetamol, aspirin, or other NSAIDs like ibuprofen

Read those as yellow-flag counts, not verdicts. Crossing a threshold in one busy month is not a diagnosis. A consistent pattern of high acute-medication days, month after month, is the signal worth raising with a clinician. Only a healthcare professional can determine whether MOH is actually present — this page cannot, and neither can any app.

Why it's so easy to miss

Nobody plans to overuse. Each individual tablet is a reasonable response to a real headache. The problem only exists in aggregate, spread across weeks, which is exactly the view your memory can't hold. Ask most people how many days last month they took something for their head and you'll get a shrug and an underestimate. That blind spot is the whole reason MOH sneaks up — and the whole reason a simple tally is so protective. For the plain-language overview, see what is medication-overuse headache.

How tracking protects you

You don't need to do anything clever here — you need a count. If you log what you take every time you take it, your acute-medication days become a number you can see rather than a feeling you can't. A running monthly tally does three things: it catches an upward creep months before it would otherwise be obvious, it gives your clinician a hard figure instead of a guess, and it removes the self-blame, because a number is just information. Keeping a migraine diary covers how to capture the medication field without friction, and watching your overall migraine frequency alongside it gives the fuller picture.

What to do if your count is high — and what not to do

If your tally is regularly near or above the thresholds, the move is to bring the number to a clinician, not to make changes alone. This matters: stopping some medications abruptly can trigger a temporary worsening, and the safest way through is planned and supported. A doctor may look at preventive options that reduce how often you need acute treatment in the first place — which addresses the root of the loop. If you're weighing whether it's time for that conversation, when to see a doctor about migraine lays out the signs. The reassuring headline is that MOH is often reversible once the pattern is recognised — and recognising it starts with a number you actually wrote down.

Temple is a tracking tool, not medical advice — consult a healthcare professional.

Temple is coming soon to the App Store — it keeps a running count of your acute-medication days so the trend is never a surprise.