Headaches can last anywhere from minutes to several days, depending on the type and cause of the headache. Most common headaches resolve within a few hours to a day, but some patterns are a warning sign that you should seek urgent medical care.

Typical duration by headache type

  • Tension-type headaches
    • Episodic tension headaches often last from about 30 minutes up to 7 days.
* They are usually mild to moderate, feel like a tight band around the head, and are not usually worsened by routine activity.
  • Migraine headaches
    • The headache phase of a migraine usually lasts about 4 to 72 hours if untreated.
* Considering all stages (prodrome, aura, headache, postdrome), a migraine attack can stretch over 1–2 days, and in some cases a bit longer.
  • Chronic daily headaches
    • Defined as headaches occurring 15 or more days per month for more than 3 months, with many individual headaches lasting more than 4 hours.
* This group includes chronic migraine, chronic tension-type headache, new daily persistent headache, and hemicrania continua, which can feel **continuous** with no pain‑free interval.
  • When headaches last weeks
    • Some tension-type and chronic daily headaches can last for weeks or appear nearly constant.
* Conditions like new daily persistent headache or hemicrania continua involve continuous head pain for over 3 months.

Red-flag timing: when to worry

Seek emergency care or urgent evaluation if:

  1. A “thunderclap” headache
    • Very sudden, maximum intensity within seconds to a minute.
    • This can signal bleeding in the brain or other serious problems and needs immediate emergency assessment.
  1. Headache lasting more than 72 hours with severe pain
    • A migraine that goes on for more than 72 hours without a pain‑free period can be a condition called status migrainosus, which often needs specific medical treatment.
  1. Headache plus worrying symptoms
    • Fever, stiff neck, confusion, seizures, weakness, difficulty speaking, vision loss, or behavior changes.
 * Headache after a head injury, especially if it is worsening, associated with vomiting, confusion, or difficulty staying awake.
  1. Pattern change
    • A new, very different headache from your usual pattern, especially in people over 50 or with conditions such as cancer, blood‑clotting disorders, or immune problems.

If any of these apply, do not wait to see if it will pass: seek emergency or same‑day care.

How to think about “how long is too long?”

You can use these rough guides:

  • A mild tension‑type headache that improves within a few hours and responds to rest, hydration, and occasional over‑the‑counter pain relief is usually not dangerous.
  • Recurrent headaches that last several hours to 1–2 days and are throbbing, worse with activity, and cause nausea or light sensitivity may be migraine and are often treatable with specific medications and lifestyle changes.
  • Headaches on 15 or more days per month, or a “never‑ending” daily headache, should always be discussed with a clinician or headache specialist, because there are preventive treatments and also important secondary causes to rule out.

What to do if your headache won’t go away

  • Track your headaches
    • Note start time, duration, location, triggers, associated symptoms, and medicines taken. This helps distinguish tension, migraine, and chronic daily headaches.
  • Try first‑line self‑care (if no red flags)
    • Hydration, regular meals, sleep, reduced screen time, and stress‑reduction techniques can shorten or prevent some headaches.
* Use over‑the‑counter pain medications carefully and avoid using them on more than about 10–15 days per month to reduce the risk of medication‑overuse headache.
  • See a healthcare professional if:
    • You have headaches more than a few days per month.
    • The pain is interfering with work, school, or daily life.
    • The duration is getting longer, or the pattern is changing over time.

If your current headache is the worst you have ever had, started explosively, or comes with serious symptoms like confusion, trouble speaking, or weakness, treat it as an emergency and get immediate medical help.

TL;DR:
Most simple tension‑type headaches last from 30 minutes to a few hours (sometimes up to several days), while migraines typically last 4–72 hours; headaches that persist beyond 72 hours, occur nearly daily, or come on suddenly and severely should be evaluated urgently by a medical professional.

Information gathered from public forums or data available on the internet and portrayed here.