Is a Headache a Sign of a Heart Attack?

Most headaches have nothing to do with the heart, and headache is not one of the classic heart attack warnings like chest pain or breathlessness. But in a small number of people, a struggling heart sends its pain up to the head, so a headache can sometimes be the heart’s warning.1PubMed Central. Heart Attack Causes Head-Ache – Cardiac Cephalalgia The question that matters is not whether you have a headache, but what comes with it and when it starts.

How Often a Heart Attack Causes a Headache

Only about 5 to 6 in 100 people having a heart attack or a dangerous drop in heart blood flow report a headache along with their other symptoms.2PubMed Central. Cardiac cephalalgia: a narrative review and ICHD-3 criteria evaluation For about 3 to 4 in 100, the head is where the pain is worst.3PubMed Central. Cardiac cephalalgia: a narrative review and ICHD-3 criteria evaluation Yet in larger groups of heart attack patients, no one had headache as their only symptom.4PubMed Central. Cardiac cephalalgia: a narrative review and ICHD-3 criteria evaluation A headache by itself, with no other changes, is very unlikely to be a heart attack.

That figure describes people who are already having a heart attack. It does not mean 1 in 20 headaches is one. Headaches are extremely common and heart attacks far rarer, so most headaches come from ordinary things like tension, dehydration, or poor sleep. What changes the odds is the company the headache keeps: chest discomfort, breathlessness, sweating, or a known heart condition.

Headache-only heart attacks do happen, though, which is why doctors take them seriously. Individual cases have been published in which headache was the only sign of a heart attack.5The Open Cardiovascular Medicine Journal. Acute Myocardial Infarction Manifested with Headache In one, sudden headache and neck pain turned out to be a heart attack, and the headache went away after the blocked artery was opened.6PubMed Central. Heart Attack Causes Head-Ache – Cardiac Cephalalgia Without chest pain or tightness, these cases are easy to miss, even for doctors.7PubMed. Cardiac cephalalgia closely associated with acute myocardial infarction Most heart attacks still bring pressure, squeezing, or tightness in the chest, sometimes spreading to the arm, jaw, or back, so those remain the symptoms to watch for first.

What a Heart-Related Headache Feels Like

Doctors call a headache caused by poor blood flow to the heart “cardiac cephalalgia,” and you may hear that term in a hospital. Headache specialists describe it as a migraine-like headache that happens during a heart blood-flow problem and is usually made worse by exercise.8PubMed Central. Cardiac cephalalgia: a narrative review and ICHD-3 criteria evaluation It can last from minutes to hours and is most often described as severe.9Practical Neurology. Cardiac Cephalgia

The features that point toward the heart:

An ordinary tension headache usually doesn’t switch on and off with exertion this way. A new pattern like this, especially after about 50 or with heart risk factors, is worth reporting to a doctor promptly.

Heart pain can be felt elsewhere because nerves from different areas meet in the same places. It often spreads to the jaw, neck, and face, and the head is a natural extension of that.

The link to the heart is shown when the headache starts as heart blood flow drops and worsens or eases along with it.16PubMed Central. Cardiac cephalalgia: a narrative review and ICHD-3 criteria evaluation In two people whose exercise headaches matched heart strain on a treadmill test, the headaches stopped completely once their blocked arteries were treated.17PubMed. Cardiac cephalgia: a treatable form of exertional headache

Nitroglycerin adds one catch. A headache that eases with it can point to the heart, yet the drug itself commonly causes headaches. A headache after taking nitroglycerin is usually the medicine, not a new heart problem. If headaches stop you from using your prescribed nitroglycerin, tell your doctor.

When a Headache Needs Emergency Care

Call emergency services for a headache that comes with any of these:

  • Chest pain, pressure, or tightness.
  • Pain spreading to the jaw, neck, shoulder, or arm.
  • Shortness of breath, cold sweat, or nausea.
  • A start during exertion that eases with rest, especially if it is new.
  • A sudden, explosive onset that peaks within a minute.

Women and people whose pain sits in the face or jaw may get fewer classic clues. When heart blood-flow problems cause pain only in the face, jaw, or head, women are affected more often than men.18PubMed. Craniofacial pain as the sole symptom of cardiac ischemia: a prospective multicenter study So women should not dismiss unexplained head, jaw, or tooth pain with exertion just because there is no chest pain.

In the moment, call emergency services rather than driving yourself, because paramedics can begin treatment and an ECG on the way. Chew an aspirin only if you are not allergic and a dispatcher or doctor advises it, since it is not right for every emergency headache. Sit or lie down, and note when the headache began and what you were doing, because the dispatcher and hospital will ask. Don’t wait to see whether a painkiller works before deciding to call.

Some situations are not emergencies but still deserve a visit. Repeated headaches that come with exertion and fade quickly with rest should be checked within days, even if each one passes. Bring notes on timing, triggers, and what relieved them, since this pattern is what lets a doctor judge the heart. Mention heart risks such as diabetes, smoking, high blood pressure, high cholesterol, or a family history of early heart disease.

Other Serious Causes of Headache With Chest Pain

A heart attack, a blood pressure crisis, and a tear in the body’s main artery can each begin with a headache and quickly become life-threatening. Only hospital tests can tell them apart, so you don’t need to work out which one it is before calling for help.

In people treated by ambulance crews for dangerously high blood pressure, about 3 in 4 had a headache and about half had chest pain.19PubMed Central. Clinical Presentation of Hypertensive Crises in Emergency Medical Services Headache, chest pain, and shortness of breath were more common when the high pressure was already damaging organs.20PubMed Central. Clinical Presentation of Hypertensive Crises in Emergency Medical Services In that group, 13 of 14 people with organ damage showed signs of a heart attack or related heart strain.21PubMed Central. Clinical Presentation of Hypertensive Crises in Emergency Medical Services If you own a home monitor, a very high reading together with a headache and chest symptoms is a reason to call emergency services. Don’t keep repeating readings for an hour while symptoms worsen, and share the reading with the emergency staff. A high reading with no symptoms still warrants prompt medical advice, though it is less urgent.

A tear in the aorta, the body’s main artery, usually starts with chest pain but can also cause neck, throat, abdominal, or back pain.22PubMed. Headache as the initial manifestation of acute aortic dissection type A A tearing or ripping pain that moves toward the back is a classic warning. About a third of people with this tear have nerve-related symptoms such as headache or stroke.23PubMed Central. Thunderclap headache as an initial manifestation of acute aortic dissection: a case report and review of literature In one woman with a migraine history, a steady forehead headache came two hours before chest pain from an aortic tear.24PubMed. Headache as the initial manifestation of acute aortic dissection type A People with aortic tears who have head and neck pain usually also have chest pain.25PubMed Central. Head and Neck Pain in Patients Presenting with Acute Aortic Dissection

How Doctors Check Whether the Headache Is From the Heart

When a headache might be heart-related, doctors should get a heart tracing (ECG) and blood tests for heart damage.26PubMed Central. Cephalalgia—A “Tricky” Symptom for the Cardiologist: Acute Coronary Syndrome Presenting as Headache Further checks include a heart ultrasound and a look at the heart arteries.27PubMed Central. Cardiac cephalalgia: a case series of four patients and updated literature review An exercise test can show whether a headache appears at the same moment the heart strains.28PubMed. Cardiac cephalgia: a treatable form of exertional headache

An ECG takes minutes and uses sticky patches on the chest, arms, and legs, and it is painless. The blood tests look for a protein released by injured heart muscle and may be repeated hours later, because early results can look normal. An artery check uses dye injected through a thin tube, usually threaded from the wrist or groin, so X-rays show any blockages. You are typically awake with the area numbed.

You can help the doctor connect the dots. Say plainly that the headache comes with effort. Mention any chest, jaw, or arm discomfort, even mild, and whether rest or nitroglycerin relieved it.

If the heart is the cause, treatment opens or bypasses blocked arteries, and the headache is expected to stop once blood flow returns. If it comes back after treatment, that is a reason to go back.

Do Migraines Raise Your Heart Attack Risk

Migraine with aura means warning signs like flashing lights or zigzag lines before the headache. People with migraine with aura have higher risk of heart attack, irregular heartbeat, and heart-related death.29PubMed. Migraine and cardiovascular disease: what cardiologists should know In over 27,000 healthy women over 45, migraine with aura was tied to higher risk of stroke and heart attack even after accounting for usual risk factors.30PubMed Central. Migraine Headache: An Under‐Appreciated Risk Factor for Cardiovascular Disease in Women UK doctors now include migraine in a common tool for estimating heart risk.31PubMed Central. Migraine and heart: A reality check

The link is about long-term risk, not a migraine causing a heart attack in the moment. One possible shared cause: some people have both migraine and chest pain from heart artery spasm, which may reflect a general tendency for blood vessels to tighten.32PubMed. Migraine and angina pectoris by coronary artery spasm

If you have migraine with aura, tell your doctor and ask for a heart risk check, since it counts as part of your overall risk. Control the risks you can: don’t smoke, treat high blood pressure and cholesterol, and stay physically active. Discuss hormonal contraception with your doctor, because estrogen-containing pills carry added stroke risk in this group.

Your typical migraine follows a familiar pattern, often including light or sound sensitivity and your usual aura. A headache that is new, triggered by effort, or accompanied by chest symptoms is different. A person with migraine can still have a heart attack, so chest symptoms with a headache must not be blamed on the migraine.