Pain & Fever

Headaches: Common Types, Causes, What Helps and When a Headache Is an Emergency

PharmacyFarm Editorial Team5 min read

Most headaches are tension-type headaches that ease with rest, water and an over-the-counter pain reliever. How to recognize your type, what helps and the signs that need urgent care.

The most common types of headache

TypeWhat it feels likeCommon triggers
Tension-typeDull, pressing pain or a tight band around the forehead, sides or back of the head, usually on both sides. You can normally carry on with your day.Stress, poor sleep, long hours at a screen, tight neck and shoulder muscles, skipped meals
MigraineThrobbing pain, often on one side, moderate to severe, worse with movement. Often nausea and sensitivity to light and sound. Some people first see an "aura" – zigzag lines or flashing lights.Hormone changes, poor sleep, stress, missed meals, alcohol, some foods
ClusterSevere, piercing pain around one eye, with a watery eye or runny nostril on the same side. Attacks last 15 minutes to 3 hours, often at the same time of day, for weeks.Not fully understood; alcohol can set off attacks during a cluster period
SinusPressure in the cheeks, forehead or around the eyes, with a blocked nose and thick, discolored mucus, during a cold or sinus infectionA sinus infection
Medication-overuse ("rebound")A headache on most days in people who take pain relievers oftenTaking pain relievers on more than 10–15 days a month

Many headaches that people put down to their sinuses turn out to be migraines – especially if they come back regularly without a cold.

What helps

  • Drink water and eat something – dehydration and low blood sugar are common triggers.
  • Rest in a quiet, dark room, especially with a migraine.
  • Try a cold or warm compress on your forehead or the back of your neck, and gently stretch your neck and shoulders.
  • Take a break from screens, and check your posture if you work at a desk.
  • Take a pain reliever early. Ibuprofen or acetaminophen work best at the first sign of a headache. Follow the label.

Use pain relievers for headaches on no more than 2–3 days a week. Taking them more often can cause rebound headaches, which only stop once you cut back.

A little caffeine helps some people, but too much – or suddenly stopping – can cause headaches too.

If you get migraines often, or over-the-counter medicines don't help, talk to your doctor. There are prescription medicines made for migraine attacks, and others that make attacks less frequent. A headache diary (when they start, what you ate, how you slept) helps you and your doctor spot triggers.

When a headache is an emergency

Call 911 if you have:

  • A sudden, severe headache that reaches full strength within a minute – often described as "the worst headache of my life"
  • A headache with a stiff neck and fever, or a rash
  • A headache with confusion, weakness or numbness on one side, a drooping face, trouble speaking, or loss of vision – these can be signs of a stroke
  • A headache after a head injury, or with a seizure or fainting

When to see a doctor

Make an appointment if:

  • You start getting new headaches after age 50
  • Your headaches change pattern, get more frequent or more severe
  • Headaches wake you up, or are worse when you cough, sneeze or strain
  • You need a pain reliever for headaches more than 2 days a week
  • You're pregnant and have a headache with swelling or changes in your vision
  • You're over 50 and have a headache with scalp tenderness or jaw pain when chewing

Frequently asked questions

Ibuprofen or acetaminophen for a headache?

Both work for most tension-type headaches, and both can help with migraine. Ibuprofen is often a good first choice for migraine. Ask a pharmacist first if you have stomach, kidney or heart problems, or take a blood thinner.

Can dehydration cause a headache?

Yes. Not drinking enough is a common trigger. Drinking water often helps within an hour or so.

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