Unexpected Causes of Your Headaches and How to Find Yours

Unexpected Causes of Your Headaches and How to Find Yours

There's a strip of painkillers in your bag, another in the car, and a box in the kitchen drawer that's nearly empty again. Each one works. The headache fades, the afternoon carries on, and three days later it's back at the same hour, in the same spot, as if it kept an appointment.

That regularity is the most useful thing about it. A headache that keeps coming back is usually being set off by something that keeps happening, and it's rarely where the pain is. One of the most common culprits is sitting in that kitchen drawer.

Why one fix never seems to be enough

Most people with regular headaches have already tried the obvious things, and most of them helped a little. The magnesium took the edge off. Cutting back on wine helped for a while. Sorting out the desk made a difference some weeks and none in others.

That pattern has a reason. Headache sources stack. A stiff neck, an irregular coffee habit, a short night and a skipped lunch each lower your threshold a little, and together they tip you over it. Take one away and you may still sit just above the line, so the fix looks useless. Remove two or three and the headaches drop far more than any single change would suggest. The job is finding out which sources are running in your life, and most people have more than one.

Migraine or tension headache

It helps to know which kind you get, because a few of the causes and fixes below are specific to migraine. A migraine usually sits on one side and throbs, gets worse when you move, and comes with nausea or a need to get away from light and noise. It can last hours or days, and some people see flickering lights or zigzag lines before it starts. A tension headache feels like a tight band or steady pressure on both sides, rarely makes you sick, and lets you carry on, just unhappily. Plenty of people get both, and most of the sources below can feed either.

The "sinus headache" that's something else

Pressure behind the cheeks and eyes feels like a sinus problem, and many people treat it as one for years. A true sinus infection comes with a fever, thick coloured mucus and usually a recent cold, and it goes when the infection does. Pressure headaches that come back month after month without any of that are very often migraine. That matters, because decongestants and nasal sprays do little for migraine.

The painkiller that becomes the problem

This is the one to rule out first, because it hides so well. Taking pain relief for headaches on more than about ten to fifteen days a month can turn occasional headaches into near-daily ones. The brain adjusts to the constant outside help by turning down its own pain control, so the headaches come more often and each tablet buys less time.

It stays invisible because the medicine seems to work: every single headache gets better, and only the month gets worse. The telltale signs are headaches that are there when you wake up, headaches that return at the same time the last tablet fades, and a count that has crept up over months while you've been taking more to keep up.

The simplest check is a calendar. Mark every day you take something for a headache and count them at the end of the month. If the count reaches ten, take it seriously. Painkillers with caffeine in them tip people into this cycle fastest, so it's worth reading the label on the box you rely on.

Breaking the cycle means a rough few weeks while the brain resets its own pain control, and it's easier with guidance and a plan for the worst days. On the other side, most people find their headaches settle to far fewer than they had before the cycle began.

The neck, and what sits on your head

At the base of your skull sits a small group of muscles whose job is fine-tuning the angle of your head. Hours of leaning towards a screen keep them clenched, and tight spots in them send pain up over the back of the head and forward to the temples and behind the eyes. It's called a neck-driven, or cervicogenic, headache, and it's easy to mistake for a tension headache because the pain shows up in the head.

The pattern is pain that starts at the back of the head and creeps forward, worse in the afternoon after desk work, often with a stiff neck. Try this at home: press gently and steadily with your fingertips into the soft spot at the base of the skull on the side that hurts. If that brings on your familiar headache, the neck is probably involved.

What helps is releasing those muscles and changing what loads them. Lie back with a massage ball under the base of your skull and let the weight of your head rest on it for a minute or two, gently, until the tension eases. Raise your screen to eye level and bring it close enough that you stop leaning in. And look at how you sleep: lying on your stomach with your head turned to one side holds the neck twisted all night, and that version of this headache is worst in the morning and fades as you move.

Check what's pressing on your head, too. A tight ponytail or bun, a snug hat, a headband, swimming goggles or a helmet can set off a headache all by themselves. This one gives itself away: it lifts within an hour or so of taking the thing off.

The jaw

Temple headaches that are worst on waking, with a sore jaw, clicking when you chew or teeth that feel worn, point to the jaw. Many people clench or grind at night without knowing it, and the big chewing muscles that run up the side of the head send their pain into the temples and forehead. Clenching during the day is linked with tension headaches, and grinding at night with migraine.

Chewing gum all day works the same muscles as clenching. Teenagers with daily headaches who gave up their gum habit mostly saw the headaches ease, and a few weeks without it is an easy thing to try at any age.

A basic over-the-counter Night guard for teeth grinding takes the load off the jaw while you sleep, and it's a fair way to test whether grinding is behind your mornings. In the day, notice where your teeth are. The resting position is lips together, teeth apart, jaw loose. Once people start noticing how often they clench under stress, most can catch it and let go.

Eyes and screens

Your eyes run on muscles too. Hours of close focus tire the small ones that do the focusing, and you blink far less while staring at a screen, which dries the eyes out. The result is a headache around and behind the eyes that builds through the afternoon. Every twenty minutes, look at something about twenty feet away for twenty seconds to let those muscles relax. Match screen brightness to the room. And get your eyes tested if your glasses are a few years old, because squinting through slightly outdated glasses all day is a common and easily fixed cause.

Caffeine and the weekend headache

What goes into you matters as much as how you sit, and coffee is the first suspect. It can both stop a headache and start one, and the difference is consistency. Your brain adjusts to your usual amount at your usual time. Have it later than normal, skip a cup or cut down suddenly, and a withdrawal headache can arrive the same day or the next, often by mid-afternoon.

The weekend lie-in that pushes back the first coffee by two hours is why some people only get headaches on Saturdays. Keep the amount and the timing steady, weekends included. If you want to cut down, do it slowly over weeks, because stopping all at once can mean several days of headaches.

The weekend headache has a second common cause: the let-down. When a stressful week finally ends, the drop in stress itself can set off a migraine within hours, which is why some people get a headache on the first morning of a holiday. During the week, stress works through the muscles instead, tightening the neck and jaw described above, so a hard week and a headache often arrive together.

Meals, food and drink

The coffee-only breakfast leads straight to the next source. Skipped meals are behind more headaches than people expect, and this one shows up in the late morning or afternoon after a missed breakfast or lunch. Eating at regular times, with some protein in the first meal, keeps it away. If you've started fasting and the headaches came with it, this is a likely reason.

Red wine, aged cheese, cured meats and fermented foods are frequent triggers, and a headache that comes on while you're still drinking, with flushing or a stuffy nose, suggests you react to something in them rather than to alcohol alone. One likely culprit is histamine, which some people clear from the gut more slowly than others. The next-morning hangover headache is a different thing, driven by what the body makes when it breaks alcohol down and by lost fluid, so water and food before and during drinking help most.

Food triggers are personal. The same glass of wine that floors one person does nothing to another, which is why a list from the internet is less useful than your own notes. Some foods take the blame unfairly, too. In the hours before a migraine, many people crave something sweet, so the chocolate eaten that afternoon looks guilty of an attack that had already begun.

Water and salt

Dehydration was behind my own headaches every time, and it's the quickest source to test. It brings on a heavy, dull headache that gets worse when you bend over. Drink a large glass of water, and if thirst was the cause, the headache usually clears within half an hour, sometimes up to three hours.

Water alone falls short for people who sweat a lot or eat very little salt: they can drink plenty and still feel dry, because the body needs salt and other minerals to hold on to water.

Hormones

Headaches that turn up reliably in the two days before a period and the first days of it are easy to shrug off as part of the month, and they have a clear cause. The sharp fall in oestrogen before a period is thought to set them off, because oestrogen helps keep the brain's blood vessels and serotonin steady.

The contraceptive pill can make this worse, because the week without pills creates its own sudden oestrogen drop, and some women get their worst headaches right then. Taking the pill without a break, or switching to a different type of contraception, stops the pattern for some, so it's worth asking about rather than accepting. If you get migraine with aura, the flashing lights or zigzag lines before the pain, bring it up before starting or staying on a combined pill, because the two together have been linked with a higher risk of stroke. Perimenopause brings its own version, as oestrogen swings up and down, and it's why some women who never had headaches start getting them in their forties.

Sleep

A headache that's there when you wake up and fades within an hour of getting up is typical of sleep apnoea, where breathing stops and starts through the night and oxygen dips each time. Loud snoring, waking unrefreshed and daytime sleepiness alongside the morning headache make it worth getting checked, because treating the breathing usually clears the headache too.

Sleep timing matters as well. Too little, too much, or a very different bedtime at the weekend can each set off a headache in people who are prone to them. Keeping the same wake-up time every day helps calm a headache-prone system.

Weather

Some people feel a headache coming before the rain. Weather sensitivity is real for part of the population, though why it happens is still debated, and plenty of people who suspect it turn out to be unaffected. Tracking your headaches against weather changes for a month will show whether you're one of them. If you are, the weather stays out of your hands, but you can keep your other sources low on the days a change is coming, so the weather alone is less likely to tip you over.

Medicines you take for something else

Some medicines cause headaches as a side effect. Nitrates for the heart, some blood pressure tablets and erection tablets widen blood vessels, and a headache can follow. Some antidepressants cause headaches in their first weeks too. If yours started or got worse soon after starting or changing a medication, that's a strong clue, and there's often an alternative with less of this effect.

A headache that lives in your house

Some headaches belong to a building. If yours come and go at home, ease once you're out of the house, get worse when the heating goes on in autumn, or turn up in several people under the same roof at the same time, think about carbon monoxide. It's a gas with no colour or smell, given off by boilers, furnaces, gas cookers, fires and heaters that burn badly, and a headache is its most common sign, sometimes with tiredness, dizziness or feeling sick. A Carbon Monoxide Detector near where you sleep settles the question for very little money, and a yearly service keeps gas and oil appliances burning cleanly. If you suspect it, switch the appliance off, get outside, and get checked the same day.

When it started after something

Some people can name the week their headaches began: after a concussion, a whiplash, a bad virus. When that's your story, the nervous system itself has often become more sensitive, and lifestyle changes alone rarely settle it. Get that kind of headache checked properly first, and use everything else here to keep the load down.

Finding your source

Two weeks of notes will tell you more than years of guessing. Each time a headache comes, write down when it started, where it sits, and what happened in the few hours before: food, coffee, sleep, screen time, posture, stress, where you are in your cycle, the weather. Note what finally eased it, and keep the notes even after you find your answer, because if you ever get your headaches looked at, two weeks on paper say far more than a description from memory.

Patterns show up fast. Headaches that are there on waking point to the neck, the jaw, sleep apnoea or too much painkiller. Ones that build through the afternoon point to the neck, the eyes or a missed meal. Headaches on Saturdays point to caffeine timing or the let-down after a hard week. Ones that arrive with a glass of wine point to food and drink, ones that follow your cycle point to hormones, and ones that lift whenever you leave home point to the house itself. Look for the two or three that keep coming up and work on those together.

What helps in the background

While you track down your sources, two things lower your threshold for all of them. Regular exercise is the first: strength training and steady cardio both mean fewer migraine days for many people.

Certain nutrients are the second. Magnesium calms the nerves and blood vessels involved in migraine, and people with migraine often run low. Magnesium Glycinate is a gentle form to take in the evening. Riboflavin, vitamin B2, feeds the brain's energy supply, and people who take it tend to have fewer migraine days. All three take a month or more to show.

Headaches that need help today

Most headaches are uncomfortable and harmless, and ones that have followed the same pattern for years rarely hide anything serious. What deserves attention is change: a headache that's new, different or getting worse. A few need emergency help the same day. Get it straight away for a headache that hits its full force within seconds or a minute, the worst you've ever had. The same goes for a headache with fever and a stiff neck, or one that comes with weakness, numbness, confusion, trouble speaking or loss of vision.

Everyday high blood pressure is usually silent, so a regular headache is rarely a sign that your pressure is up. A very high reading is a different matter: above 180/120, together with a headache, chest pain, numbness or a change in vision, call for emergency help.

Get checked urgently, too, for a new headache after a head injury, even a mild one, or a new headache that wakes you from sleep or keeps getting worse week after week. The same applies to a new kind of headache after the age of fifty, a headache during pregnancy or in the weeks after giving birth, a severe headache that changes sharply when you stand up or lie down, and one that starts suddenly during exercise or sex.

The box in the drawer

Those painkillers answered the pain while whatever was setting it off carried on, week after week, on the same schedule, and for some people the tablets became part of the problem.

Start the notes tomorrow. Two weeks in, the pattern that made your headaches so predictable becomes the thing that gives them away, and for most people the list is short: a neck, a jaw, a coffee habit, a skipped meal, too little water, a cycle, painkillers on too many days. Deal with two or three together, and the box in the kitchen drawer can go back to lasting months.


Found your source and still need relief on the bad days? Natural Remedies for Headaches: Effective Ways to Relieve Pain Without Medication — gentle ways to ease a headache once it has started, while you work on what's causing it.

Get migraines and want to go further with your notes? How to Track Your Migraine Patterns and Find What Helps — a fuller guide to keeping migraine notes and reading the patterns in them.


Know someone who carries painkillers everywhere they go? Send them this. Two weeks of notes might show them what the painkillers have been covering up.


Disclaimer: This article is general information. For advice about your own headaches, medication or health, talk to a qualified health professional. If you're pregnant, take regular medication, or have a health condition, get professional advice before trying any supplement mentioned here. If you have any of the warning signs described above, get help straight away.

Affiliate Disclosure: This article contains affiliate links. As an Amazon Associate, All For Life earns from qualifying purchases, at no extra cost to you. We only link to products we would recommend without the commission.