A high blood pressure reading and a headache can happen at the same time.
It is easy to assume that one has caused the other, but the relationship is not always straightforward.
Outside a hypertensive crisis, elevated blood pressure is not considered a common direct cause of everyday headaches. Other contributing factors may need to be explored.
Headache disorders are common. According to the World Health Organization (Source: WHO), they affected approximately 40% of the global population, or around 3.1 billion people, in 2021.
Understanding the type of headache you are experiencing is an important part of deciding what to do next.
This article explains what current research says about high blood pressure and headaches.
It also covers when a headache needs urgent medical attention, and when a clinical assessment may help explore other contributing factors, such as neck function, tension or medication use.
What Does Research Say About High Blood Pressure and Headaches?
Many people associate headaches with high blood pressure. Hypertension is often listed as a possible cause, and a headache that appears around the same time as a high reading can make the connection seem clear.
Current medical research does not strongly support the idea that moderately elevated blood pressure directly triggers headaches in most people. At mild to moderate levels of hypertension, there is limited consistent evidence of a direct causal link between blood pressure readings and headache occurrence.
Blood pressure and headache have a clearer and more serious connection during a hypertensive crisis. This is when blood pressure reaches dangerously high levels, typically above 180/120 mmHg. A severe headache can be one of several warning signs. This is a medical emergency and requires immediate attention.
When headaches occur alongside elevated blood pressure readings outside a hypertensive crisis, other possible causes may also need to be considered.
What Else May Be Contributing to the Headache?
Several types of headache can be mistaken for a hypertension headache because the timing or sensation seems to fit.
A clinical assessment may help explore possible contributing factors. These can include:
Cervicogenic Headache
A cervicogenic headache originates from structures in the upper neck and is referred into the head. Tension, stiffness or dysfunction in the cervical spine may produce head pain that does not feel like a “neck problem”.
It can present as pressure behind the eyes, at the back of the head or across the temples. Stress and physical tension may also coincide with temporary changes in blood pressure, which can make the relationship difficult to interpret without assessment.
Tension-Type Headache
The WHO notes that episodic tension-type headache is reported by more than 70% of some populations (Source:WHO) .
It typically presents as a dull, band-like pressure around the head. Factors such as stress, poor posture, dehydration or disrupted sleep may be relevant, and some of these factors may also temporarily raise blood pressure.
This overlap can make it easy to assume one is causing the other.
Medication-Related Headache
Some medications used to treat high blood pressure may cause headaches as a side effect, particularly when starting a new prescription or adjusting a dose.
For some individuals, frequent use of pain relief medication may contribute to medication overuse headache.
Speak with your doctor or pharmacist before changing any prescribed medication or pain relief routine.
Why a Thorough Assessment Matters
When headaches are assumed to be caused by blood pressure, other potential contributing factors may be overlooked. A thorough assessment can help build a clearer picture.
It is also important not to change prescribed medication or make significant health decisions without advice from an appropriately qualified health practitioner.
The WHO reports that only a minority of people with headache disorders worldwide are appropriately diagnosed and treated by a health care provider. It also notes that headache disorders have been underestimated, under-recognised and under-treated.
A thorough assessment can consider your headache history, pain location, onset, associated symptoms, posture, neck function and medical background.
This may help identify potential contributing factors and guide appropriate next steps. While a clinical assessment can provide valuable insights, it may not always identify a definitive cause for your headaches.
When Should You Be Concerned?
It is always worth taking headaches seriously, but there are specific signs that warrant prompt medical attention.
Seek urgent care if your headache:
- Comes on suddenly and severely (sometimes described as the “worst headache of your life”)
- Is accompanied by a blood pressure reading above 180/120 mmHg
- Occurs alongside vision changes, confusion, chest pain, or difficulty speaking
- Follows a head injury
- Is a new type of headache you have not experienced before, particularly after age 50
For recurring headaches that do not fit these warning signs, the next step may be to discuss the pattern with a qualified health practitioner and explore potential contributing factors.
How Sydney Headache and Migraine Centre May Help
Sydney Headache and Migraine Centre provides clinical assessments for recurring or complex headache presentations.
The assessment considers a range of possible contributing factors, including blood pressure history, stress, neck function and tension.
Our clinicians assess a range of headache presentations, including cervicogenic headache, tension-type headache, chronic daily headache, hormonal headache and medication overuse headache.
Our approach aims to identify potential contributing factors to your pain while addressing symptoms. Assessment findings and treatment responses vary between individuals.
Clinics are located in Sydney CBD, Kogarah, Caringbah and Moore Park.
If you would like to explore what may be contributing to your headaches, you can learn more about the assessment process or book an appointment when you are ready.
Ready to Take the First Step in Understanding Your Headaches?
A clinical assessment may help explore possible contributing factors when headaches keep returning.
Practitioners at Sydney Headache and Migraine Centre consider your headache history, symptoms, neck function and relevant medical background.
An assessment can provide useful insights, but it may not always identify a definitive cause.
Frequently Asked Questions
Can high blood pressure cause headaches?
At dangerously high levels, typically above 180/120 mmHg, high blood pressure may occur with a severe headache.
This may indicate a hypertensive crisis and requires emergency medical attention.
At mild to moderate levels, research does not consistently support a direct causal link between elevated blood pressure and everyday headaches.
What does a hypertension headache feel like?
During a hypertensive crisis, headache may be sudden or severe and can occur with symptoms such as vision changes, shortness of breath or chest pain.
Headaches that occur alongside less severely elevated blood pressure may have a range of possible contributing factors and should be assessed by an appropriately qualified health practitioner.
What type of headache is most often mistaken for a blood pressure headache?
Cervicogenic headache and tension-type headache can sometimes be mistaken for blood pressure-related headaches.
Stress and physical tension may affect headache symptoms and can also coincide with temporary changes in blood pressure, creating an association that requires careful assessment.
When should I go to hospital for a headache?
Seek emergency care for a headache that comes on suddenly and severely, that accompanies a blood pressure reading above 180/120 mmHg, or that is associated with confusion, vision loss, chest pain, weakness, or difficulty speaking.
A new headache pattern that feels different from anything you have experienced before also warrants prompt medical review.
How do I find out what is causing my headaches?
A clinical assessment can help explore potential contributing factors to recurring headaches.
At Sydney Headache and Migraine Centre, clinicians consider headache history, neck function, posture, lifestyle factors and medical background.
An assessment may guide appropriate next steps, although it may not always identify a definitive cause.
This information is for general purposes only and does not replace professional medical advice. Always consult a qualified health practitioner for personalised care.
Book A Migraine / Headache Assessment
Book online or give us a call on 1300MyHeadache to organise an assessment with Sydney Headache & Migraine Centre and learn more about what causes your migraines and how we can help treat them.
