Migraine vs. Tension Headache: How to Tell the Difference

Patients often get confused about whether their headache is a migraine or a tension-type headache. This is especially true for mild to moderate headaches. When the pain is severe and you are lying in a dark room unable to move, the diagnosis tends to be pretty clear. It is the in-between cases that cause the most confusion.

There are generally two schools of thought on this. Some clinicians believe that mild to moderate headaches are tension-type headaches, and that migraines are by definition more severe. Others believe that migraine is a spectrum, and that the same patient can have attacks that range from moderate on a good day to completely debilitating on a bad one. I tend to fall in that second camp, and I think the science supports it.

What we know about tension-type headaches

Tension-type headaches tend to feel like a dull, steady pressure. Patients often describe it as a band squeezing around the head, or a weight at the base of the skull. The pain is usually on both sides and doesn’t throb. Nausea is uncommon, and while light or sound might be mildly annoying, they are not the kind of unbearable that forces you into a dark room. Most patients can push through a tension headache, even if they would rather not.

What sets a migraine apart

A classic migraine is harder to miss. The pain is usually one-sided, throbbing, and worsened by movement. Nausea is common and light and sound sensitivity can be severe. Some patients also experience aura beforehand, which can include visual disturbances like zigzag lines or blind spots, tingling or weakness on one side of the face, arms or legs. Attacks can last anywhere from 4 to 72 hours, and many patients feel wiped out for a day or more after the pain resolves.

But here is where it gets complicated. Many patients with migraine do not always have severe attacks. Some days the pain is a 4 out of 10. Other days it is a 9. Research supports the idea that migraine is a spectrum, and that what looks like a tension headache on a mild day may actually be a migraine variant in the same patient who has classic attacks on worse days. The Spectrum Study, published in Neurology, found that 32% of patients who were initially diagnosed with tension-type headache were later reclassified as migraine after a neurologist reviewed their headache diaries.

It is also worth noting that the ICHD-3, which is the international classification system most clinicians use to diagnose headache disorders, actually permits patients with chronic migraine to have tension-type headache days. That alone tells you how blurry the line can get.

Why it matters

If a patient has been treating migraines as tension headaches for years, they are probably not getting adequate relief. Tension headaches respond reasonably well to over-the-counter pain relievers. Migraines, even the milder ones, often need a different approach. The 32% reclassification rate from the Spectrum Study suggests that misdiagnosis is not rare. It is common, and it has real consequences for patients who spend years reaching for ibuprofen and wondering why it never quite works.

If you are not sure what type of headaches you have, that uncertainty itself is worth discussing with a specialist. A careful history usually tells us a lot more than any scan or blood test.

Not sure what type of headache you have?

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