What causes angina?

Short answer
Angina occurs when heart muscle temporarily receives less oxygen-rich blood than it needs, usually because coronary blood flow is restricted.
This answers one question. It is not a diagnosis and does not replace an assessment by a licensed doctor.
At a glance
- Core problem
- Heart oxygen demand temporarily exceeds the available supply
- Cause and trigger
- The artery problem is distinct from the activity that reveals it
- Assessment
- Symptoms, examination, risk factors, and selected heart tests are considered together
Why angina happens
The common underlying process is narrowing of the coronary arteries by fatty plaque. A coronary artery spasm or disease affecting the heart's small blood vessels can also limit flow, and severe anaemia or other conditions can create an oxygen supply-and-demand mismatch.
Underlying cause versus episode trigger
A trigger is the immediate demand that brings on symptoms; it is not necessarily the disease causing reduced blood flow. Physical exertion, emotional strain, cold weather, or a heavy meal can make the heart work harder and expose an existing limitation.
Factors linked with coronary artery disease include smoking, high blood pressure, diabetes, unhealthy cholesterol levels, kidney disease, and family history. Their presence does not prove that a particular chest sensation is angina, but it informs the assessment.
Getting the cause checked
Book a medical review for chest pressure, squeezing, heaviness, or tightness that appears with effort or keeps returning. The clinician may review your symptom pattern and risk factors, examine you, record an electrocardiogram, and select further tests based on the findings.
Keep notes on the activity at onset, location, spread, associated breathlessness or nausea, duration, and relief. Continue prescribed treatment as directed and avoid making medication changes based only on a suspected cause.
Changes that need urgent care
Seek emergency help for severe or persistent chest pressure, symptoms at rest, a rapidly worsening pattern, or discomfort unlike your previous episodes. Call UAE emergency services if pain spreads to the arm, jaw, back, or shoulder, or comes with breathlessness, fainting, cold sweating, confusion, or marked weakness.
An unstable pattern can signal an acute reduction in heart blood flow. Waiting for a routine appointment is not appropriate when red-flag symptoms are present.
Questions about your possible cause
Ask which diagnosis could explain your pattern, which risk factors can be treated, and what each proposed test is intended to clarify. Request a written plan covering safe activity, medicine use, follow-up, and the changes that require emergency action.
Find care
General Clinics & Polyclinics in Abu Dhabi
That answer is general. If you want it applied to your own case, these are licensed general clinics & polyclinics listed in Abu Dhabi.
27 Ar Ruwwad St - Shakhbout City - MSH4 - Abu Dhabi - United Arab Emirates
Accepts: Daman, Thiqa, Cigna, MetLife +20 more
Al Ruwais, Al Dhafrah
Accepts: Daman, Thiqa, AXA, Cigna +16 more
Al Bahyah - Al Bahyah Old - Abu Dhabi - United Arab Emirates
Accepts: Daman, Thiqa, Cigna, Allianz Care +18 more
Abu Dhabi
Accepts: Daman, Thiqa, AXA, Cigna +27 more
Ordered by verification status and how complete each clinic's public record is, then alphabetically. This is a directory listing, not a ranking — Zavis does not rate or recommend providers.
A factual listing drawn from the DHA, DOH and MOHAP licence registers. It is not a referral, an endorsement, or advice that any of these providers is right for you.
Questions people ask
Can high blood pressure cause angina?
High blood pressure makes the heart work harder and contributes to coronary artery disease over time. A blood-pressure reading alone cannot establish the cause of current chest discomfort.
Can angina happen without a major artery blockage?
Yes. Coronary artery spasm and problems in the heart's small vessels can restrict blood flow even when a large fixed narrowing is not the explanation.
Related
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Medical disclaimer. This page is general health information, not medical advice, and it cannot diagnose you. Always consult a licensed healthcare provider about your own symptoms and treatment. In an emergency in the UAE, call 998 for an ambulance.