Another “headache” — except this one arrives with nausea, a desperate wish for a dark quiet room, and an afternoon quietly cancelled. If that sounds familiar, you may have spent years under-treating a migraine by calling it a bad headache, and the distinction is not pedantry. A migraine and a regular (tension-type) headache are different conditions with different mechanisms, different durations, and — the part that matters at 2 p.m. on a workday — different treatments. Calling one by the other’s name is how people end up taking the wrong medicine and concluding that nothing works.
First, define the two contestants
A tension-type headache is the common headache: a dull, pressing tightness, often described as a band around the head, mild to moderate in intensity, on both sides. It is miserable but it lets you function; most people work through one. A migraine is a neurological condition, not just a worse headache. An attack typically builds over an hour or two, throbs or pulses — often on one side — and brings reinforcements: nausea or vomiting, sensitivity to light and sound, sometimes sensitivity to smells. Movement makes it worse, which is why migraine sends people to bed while tension headaches send them to the medicine cabinet and back to their desk. MedlinePlus on migraine gives the clinical overview if you want the formal version of what follows.
Duration: the fastest tell
If you remember one discriminator, make it the clock. A tension headache lasts from about 30 minutes to a few hours and then lets go. A migraine runs 4 to 72 hours untreated — half a day to three days — and often leaves a hungover, washed-out phase (the postdrome) after the pain itself ends. A “headache” that regularly eats an entire weekend is not behaving like a tension headache no matter what you have been calling it. Duration also explains why the treatments diverge: a short-lived tension headache can be ridden out with a standard painkiller, while a two-day migraine needs to be stopped early, at the first sign, before it establishes itself.
The supporting symptoms vote loudly
Pain character helps, but the accompanying symptoms are the stronger evidence. Nausea with a headache points hard toward migraine; so does needing to lie still in the dark, finding ordinary light painful, or being bothered by sounds that usually do not register. Tension headaches do not typically cause nausea, and light or sound sensitivity, if present at all, is mild — one or the other, not both together. Vomiting settles the argument in migraine’s favor almost every time. Keep a simple log for a month — start time, duration, one-sided or both, nausea yes/no, light sensitivity yes/no, what you took and whether it worked — and patterns that were invisible attack-by-attack become obvious on paper. That log is also the single most useful thing you can hand a doctor.
Aura: the signature only migraine has
About a quarter of people with migraine get an aura, and if you get one, the diagnosis is close to certain. Auras are temporary neurological symptoms, usually visual: shimmering zigzag lines, a blind spot that grows, flashing lights, sometimes tingling that marches up a hand or one side of the face, occasionally brief trouble finding words. They typically build over five to twenty minutes and clear within an hour, often 20 to 60 minutes before the head pain starts — which makes the aura, once you learn to recognize it, an early-warning system and the ideal moment to take medication. A first-ever aura, an aura that lasts over an hour, or aura symptoms in someone over 50 should always be checked by a doctor promptly, because stroke and TIA can mimic them and the first occurrence deserves a proper workup rather than an assumption.
The attack that starts before the pain
Migraine has another feature tension headaches lack entirely: a prodrome, a run-up phase that can start hours or even a day before any pain. The signs are subtle and strange — repeated yawning, cravings for sweet foods, unusual thirst, a stiff neck, irritability or an oddly lifted mood, trouble concentrating. Many people only recognize their prodrome in hindsight, printed clearly in the log once they start recording “felt weird at 3 p.m.” alongside the attack that arrived at 9. Learning yours is worth real money, therapeutically speaking: medication taken during the prodrome or at the aura — before the pain — works dramatically better than the same pill taken four hours in. It is also diagnostic. A “headache” preceded by a day of yawning and chocolate cravings was a migraine all along, whatever the pain itself felt like.
Triggers: overlapping lists, different logic
Both conditions are provoked by stress, poor sleep, skipped meals, and dehydration — which is why trigger lists online look interchangeable. The difference is in the edges. Migraine has a distinctive sensitivity to changes: the let-down after stress (the famous Saturday-morning migraine), hormonal shifts around a period, sleeping in much later than usual, bright flickering light, strong smells, aged cheese and red wine for some people, and weather changes for others. Tension headaches track more simply with sustained muscle tension, posture, and grinding through long days at a screen. Knowing your category changes what you hunt for in the log: migraine sufferers look for change and combination — several mild triggers stacking on one day — while tension sufferers look for load and duration.
Treatment: where the wrong label costs you most
Here is the practical payoff. Tension headaches usually respond to ordinary over-the-counter painkillers — acetaminophen or an NSAID like ibuprofen — plus water, food, and a break from the screen; if yours are purely tension-type, how to relieve tension headaches without medication covers the non-drug toolkit in depth. Migraine often laughs at that dose. Its specific treatments — triptans, which target the migraine mechanism itself — work best taken early in an attack, which is precisely what mislabeling prevents: people wait, take a second round of painkillers, and arrive at hour six with an entrenched attack. Two cautions belong here. First, taking any painkiller on too many days per month (roughly 10 to 15, depending on the type) can itself cause a daily rebound headache pattern, a trap frequent sufferers fall into. Second, if your “headaches” need treatment more than a couple of days a week, the answer is a doctor and possibly preventive medication, not a stronger over-the-counter rotation.
When prevention enters the picture
If migraine attacks are frequent — roughly four or more migraine days a month — or if they regularly disable you despite good acute treatment, the conversation with a doctor shifts from stopping attacks to preventing them. Preventive options have expanded a lot in recent years: alongside older daily medicines (some blood-pressure drugs, some antidepressants, some anti-seizure medicines used at low dose), there is now a class of treatments aimed specifically at a migraine-related peptide called CGRP, available as monthly injections or daily or as-needed tablets. Which, if any, suits you is a medical decision, but knowing the category exists matters because many long-time sufferers still believe the painkillers-or-nothing choice of twenty years ago is the whole menu. It is not. Frequency is the trigger for that conversation, and your log is the evidence that starts it.
Can you have both? Yes — and many people do
The two conditions are not exclusive; plenty of people get ordinary tension headaches some days and full migraine attacks on others, which is exactly why their log shows confusing variety. The skill worth building is sorting attacks in real time: both-sides dull pressure, no nausea, still functioning — tension pathway. One-sided throb, nausea, light hurts, movement hurts — migraine pathway, treat early. Sorting correctly in the first hour is worth more than any single medication choice.
When any headache is an emergency
Whatever your usual pattern, certain headaches bypass all self-management: a sudden “thunderclap” headache that peaks within a minute, the worst headache of your life, headache with fever and a stiff neck, headache after a head injury, headache with weakness, confusion, fainting, vision loss, or trouble speaking, or a brand-new headache pattern starting after age 50. Those need emergency care the same day, not a log entry. Likewise, a familiar pattern that changes character deserves a prompt appointment.
The recommendation
Stop asking “how bad is this headache?” and start asking “which kind is it?” Sort by duration, by nausea and light sensitivity, by aura if you get one. Treat tension headaches simply and early; treat migraine as its own condition, with its own medication taken at the first sign. Keep the log for a month, and take it to a doctor if attacks are frequent, disabling, or changing. The label is not a technicality — it is the difference between a cabinet of half-used painkillers and a plan that actually works. And if you have been saying “I just get terrible headaches” for years, consider this your permission to re-examine that sentence. A large share of people who self-diagnose “sinus headaches” or “stress headaches” turn out, on proper assessment, to have migraine — and migraine, unlike a bad headache, has treatments designed for it.
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