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Glossary · Last reviewed 20 June 2025

Haematoma

A collection of blood that pools outside the blood vessels, usually under the skin or in tissue. It is one of the more common things that can happen after surgery, and worth understanding before you travel.

General health information, not medical advice, and not a substitute for a qualified doctor. Always consult a licensed professional before making any decision.
Published by Kings Hospitality LLC · 1314 E Las Olas Blvd, Fort Lauderdale, FL 33301, USA. Edited by Morten Andersen & Fredrik Filipsson. See our editorial standards & corrections policy.
In plain language

Blood that pools where it should not.

A bruise is a small version of the same thing. A haematoma is a larger, often firmer collection of blood that can need draining.

A haematoma is a collection of blood that has escaped from a damaged vessel and gathered in the surrounding tissue. It can appear under the skin, within a muscle, or in a deeper space, and it often shows as a swollen, tender, discoloured area. A simple bruise is the mildest form. A haematoma usually means a larger volume of blood, and it can feel firm or full rather than just looking discoloured.

Haematomas are one of the recognised things that can happen after an operation, because surgery involves cutting through tissue that contains blood vessels. Many are small and settle on their own as the body reabsorbs the blood over days or weeks. A larger one may press on nearby tissue, slow healing, raise the risk of infection, or need to be released by a doctor through a needle or a small procedure. After certain operations, such as a facelift or some breast and body surgery, a significant haematoma is a known early complication that can require a return to theatre.

Several things raise the chance of one. These include blood thinning medicines and some supplements, high blood pressure, strenuous activity too soon, and individual differences in how people bleed and heal. A careful surgeon takes a full history, gives clear instructions on what to stop and when, and watches for early signs afterward. None of this removes the risk entirely. It is a normal part of surgery, not a sign that something has gone wrong.

Why it matters abroad
Written and maintained by the Clinics for Kings editorial desk·Edited by Morten Andersen & Fredrik Filipsson
Fact-checked against the cited medical and cost sources by the Clinics for Kings editorial desk·General information, not a clinician’s review — always consult a licensed doctor.

The problem is timing and distance.

A haematoma that needs attention often shows in the first hours or days after surgery, which is exactly when many people travelling for treatment are preparing to fly home or have already left. If it appears once you are back, the team that operated is in another country, and care close to home may mean a different clinic, an emergency department, and out of pocket costs that standard travel insurance rarely covers.

So the questions to ask before you book are practical ones. How long does the clinic expect you to stay locally after this operation, and is that built into the plan rather than the minimum. What are the early warning signs you should watch for, such as rapid swelling, increasing pain, or one side becoming much larger than the other. Who do you contact day or night if something changes, and how would a problem be handled once you are home. A clear, written answer to those questions is part of choosing safely, and the questions matter more the further you travel.

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Where this comes up.

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