Almost everyone gets a headache from time to time, and most settle on their own with rest, fluids, or a change in routine. But when headaches keep coming back, become more frequent, or start behaving differently from what feels normal for you, it helps to understand what is commonly going on — and, just as importantly, to recognise the small number of warning signs that mean a headache needs urgent or emergency assessment rather than home care.
This article covers the common headache types seen in general practice, the everyday triggers that make them worse, the genuine red flags that should never be ignored, what a GP assessment for headache typically involves, and reasonable self-care for ordinary tension-type headaches.
Common Types of Headache and What Causes Them
Most headaches fall into a few well-recognised patterns.
Tension-type headache is the most common form. It usually feels like a dull, pressing or tightening sensation, often described as a band around the head, and affects both sides. It is linked to muscle tension in the scalp, neck and shoulders, and is closely tied to stress, poor posture, and fatigue.
Migraine tends to be more intense — often one-sided, throbbing, and moderate to severe, made worse by physical activity. It is commonly accompanied by nausea, sensitivity to light or sound, and sometimes by an “aura” beforehand, such as visual disturbances like flashing lights or blind spots. Migraine involves changes in blood vessels and nerve signalling in the brain, and there is often a family tendency towards it.
Sinus-related headache presents as pressure or pain around the forehead, cheeks, or behind the eyes, often worse when bending forward. It usually occurs alongside nasal congestion, thick nasal discharge, or a recent cold, and is related to inflammation or infection of the sinuses.
Medication-overuse headache is a less obvious but important category. When painkillers are taken very frequently for headaches — more than 10–15 days a month over a prolonged period — the body can paradoxically end up with more frequent headaches, creating a rebound cycle that is hard to break without cutting back on the medication under medical guidance.
Everyday Triggers That Make Headaches Worse
Several common, non-medical factors can bring on or worsen a headache, and identifying them is often more useful than any single treatment:
- Stress and tension, especially prolonged or unmanaged
- Dehydration, particularly in hot, humid weather
- Poor or irregular sleep, including both too little sleep and oversleeping
- Prolonged screen time, which strains the eyes and neck posture
- Skipped meals, which can lower blood sugar and trigger headaches
- Excess caffeine, or sudden caffeine withdrawal
- Alcohol, strong smells, or glare from bright light
- Hormonal changes, which many women notice around their menstrual cycle
Keeping track of when headaches occur alongside these factors often reveals a pattern that can be managed with simple lifestyle adjustments.
Red Flags: When a Headache Needs Urgent or Emergency Assessment
While the vast majority of headaches are not dangerous, certain features are genuine warning signs and should prompt immediate emergency assessment rather than waiting it out at home. These include:
- A sudden, extremely severe headache that reaches its peak within seconds to a minute — often described as the “worst headache of my life” (a thunderclap headache)
- Headache together with fever and a stiff neck
- Headache following a head injury, especially if it is worsening, or comes with vomiting, drowsiness, or confusion
- A new headache accompanied by vision changes, weakness or numbness on one side of the body, difficulty speaking, or confusion
- A headache that wakes a person from sleep, or one that is consistently worse in the morning and accompanied by vomiting
Any of these patterns needs emergency evaluation at a hospital emergency department, because they can signal conditions such as bleeding around the brain, meningitis, stroke, or raised pressure inside the skull — all of which require urgent hospital-based investigation and treatment that goes beyond what a general practice clinic provides. If in doubt with any of these symptoms, the safest course of action is to seek emergency care immediately.
What a GP Assessment for Headache Typically Involves
For headaches that do not present with the red flags above, a GP assessment usually starts with a detailed history — how often the headaches occur, how long they last, where the pain is felt, what seems to trigger or relieve them, any associated symptoms such as nausea or visual changes, and current medication use, including how often painkillers are taken.
This is followed by a physical examination, which typically includes a basic neurological check (such as eye movements, reflexes, and limb strength) and a blood pressure check, since very high blood pressure can occasionally contribute to headache. Depending on the findings, a doctor may recommend simple blood tests where relevant.
If the pattern is atypical, if red-flag features are present, or if a headache does not respond as expected to standard measures, the next step is referral — either for brain imaging such as a CT or MRI scan, or for a specialist neurology opinion. These investigations and specialist assessments are arranged through referral to a hospital or specialist centre, as they fall outside what a general practice clinic is equipped to provide directly.
Self-Care That Is Genuinely Appropriate for Ordinary Tension-Type Headaches
For headaches without any red-flag features, several simple measures can help while symptoms settle or while awaiting a GP review:
- Stay hydrated, particularly in hot climates, and avoid excessive caffeine or alcohol
- Keep regular meals to avoid drops in blood sugar
- Prioritise consistent sleep, aiming for a regular bedtime and wake time
- Take screen breaks, resting the eyes and stretching the neck and shoulders periodically during long periods of screen use
- Manage stress through activities such as light exercise, stretching, or breathing exercises
- Over-the-counter pain relief can be used as directed on the packaging or by a pharmacist, but should not be relied on frequently, since overuse can itself lead to medication-overuse headache
A simple headache diary — noting when headaches occur, what preceded them, and how long they lasted — can be a useful tool to bring along to a GP visit.
When to See a Doctor
It is reasonable to arrange a GP visit, rather than continuing with self-care alone, when headaches are becoming more frequent or severe, when they are interfering with work, sleep, or daily activities, when painkillers are needed more than a couple of times a week, when the character of the headache has changed from what is usual, or when a headache simply does not settle with the usual self-care measures. A GP visit is also a sensible step for anyone unsure whether their symptoms fall into the “urgent” category described above.
Frequently Asked Questions
How can I tell the difference between a tension headache and a migraine?
Tension headaches usually feel like a dull pressure or tightness on both sides of the head and do not typically stop someone from continuing daily activities. Migraines tend to be more intense, often one-sided and throbbing, and are commonly accompanied by nausea, light or sound sensitivity, and are made worse by movement. If you are unsure which type you are experiencing, a doctor can help clarify this based on the pattern and associated symptoms.
Are frequent headaches always something serious?
No — most recurring headaches are tension-type or migraine-related and are not dangerous, though they can still significantly affect quality of life. That said, a change in pattern, new features, or any of the red-flag symptoms described above warrant medical assessment to rule out less common but more serious causes.
Can dehydration alone cause a bad headache?
Yes, dehydration is a well-recognised and common headache trigger, particularly in hot and humid weather or after reduced fluid intake. Rehydrating often improves symptoms within a few hours, though persistent or severe headaches should still be assessed if they do not settle.
Is it safe to take painkillers every day for headaches?
Regular, frequent use of painkillers for headaches is not advisable, as it can lead to medication-overuse headache, where the medication itself starts perpetuating the cycle of pain. If you find yourself needing painkillers more than a couple of times a week, it is worth discussing this pattern with a doctor.
Should I go to the GP or straight to the hospital for a bad headache?
If your headache comes with any red-flag features — sudden severe onset, fever with neck stiffness, following a head injury, new weakness, vision changes, difficulty speaking, confusion, or waking you from sleep with vomiting — go to a hospital emergency department immediately. For headaches without these features, a GP visit is an appropriate first step.
Can haze or weather changes trigger headaches?
Many people do notice headaches linked to changes in weather, humidity, or air quality, including haze conditions common in this region. The exact mechanism varies between individuals, but staying hydrated, keeping indoor air clean when haze is present, and avoiding known personal triggers can help reduce the impact.
For further information, you are welcome to call 012-943 3882 or walk in during opening hours.