Any operation involves cuts, and some bleeding is expected. For most people the body’s clotting system copes. For people with a clotting factor deficiency it may not, and the surgical team needs to know before the day of the operation.

Key takeaways

  • Clotting factor deficiencies, including haemophilia and von Willebrand disease, make the blood clot more slowly. Many are inherited, and some people only find out after bleeding during surgery.
  • A structured bleeding history is central to assessing surgical risk and may be more informative than routine blood tests, according to a 2026 systematic review.
  • Your surgeon and anesthesia team need to know about any personal or family history of heavy bleeding before you book, and how you will get specialist care if you travel.

Choosing how a bleeding disorder is managed around surgery is a job for the surgeon, the anesthesia team and a blood specialist.

What are clotting factor deficiencies?

Clotting factors are proteins in the blood that work together to form a clot and stop bleeding. A deficiency means one or more of them is low or not working properly. Two conditions are most often discussed:

  • Haemophilia. The NHS describes haemophilia as a rare condition that affects how blood clots, so you bleed more easily than other people. It is usually inherited, and symptoms include bleeding for a long time after an injury, surgery or having a tooth removed. Most people with haemophilia are born with it. The NHS also notes that women who carry the altered gene can have symptoms, though this is less common. The US CDC states that inherited hemophilia occurs in about 1 of every 5,000 male births and affects people of all racial and ethnic groups.
  • Von Willebrand disease. The NHS describes it as an inherited condition in which the blood does not clot properly. Common signs include easy bruising, frequent nosebleeds, bleeding gums and heavy periods. It does not always cause symptoms unless you have an injury, and the NHS says it is sometimes found when you have more bleeding than usual after surgery or giving birth.

Other deficiencies exist, and some are rare. If you have a diagnosis you do not recognize here, the same rule applies: tell your surgeon the exact name.

Why does it matter for cosmetic and facial surgery?

The CDC says people with hemophilia may bleed heavily after injuries or surgery because their blood does not clot normally. Elective surgery on the face is planned, which means there is time to prepare. That only helps if the team knows. The 2026 Cureus systematic review of bleeding risk in elective surgery says evidence to guide care is limited and that studies differ a great deal, so there is no single standard approach. What the authors do say is that a structured bleeding history is central to perioperative risk evaluation and may be more informative than routine coagulation screening for predicting bleeding complications.

That point is also made by anesthesiologists. A 2025 Delphi consensus of 50 Spanish anesthesiologists recommended avoiding universal preoperative coagulation testing and basing testing on medical history, standard bleeding-risk questionnaires and specific risk factors. So the questions you are asked, and the answers you give, matter more than a blood test you did not need.

What should you tell your surgeon and anesthesia team?

Bring this to the consultation, in writing if that is easier:

  • Any diagnosed bleeding or clotting condition, with its exact name, and the name of the specialist who treats you.
  • A family history of haemophilia, von Willebrand disease or “bleeding problems,” even if nobody was formally diagnosed.
  • Long or heavy bleeding after a dental extraction, a previous operation or an injury.
  • Easy bruising, frequent nosebleeds, bleeding gums or unusually heavy periods. These are the signs the NHS lists for von Willebrand disease. Whether surgery during your period matters is covered in surgery and menstruation.
  • Every medicine and supplement you take, including aspirin. Royal Berkshire NHS Foundation Trust’s leaflet on nasal surgery notes that aspirin can affect blood clotting and increase the risk of bleeding. Your surgeon decides what you continue or stop.

Our guides to what to do before nose surgery and to general anesthesia for a nose job cover the broader preparation. If you have another health condition that affects surgery, see our guide on surgery with HIV, which follows the same principle of telling your team early.

What if you are travelling for surgery?

If you already have a diagnosis, the CDC notes that good quality medical care from providers who know the disorder helps prevent serious problems, and that hemophilia treatment centers exist for that. Before you book a procedure abroad, ask:

  1. Will the surgeon speak with my own haematology specialist before the operation?
  2. What blood-related care can this hospital provide, and who is on call overnight?
  3. What happens if there is unexpected bleeding after I leave the hospital?
  4. Where would I be sent for urgent care in that city?

If the hospital or surgeon cannot answer, treat that as important information. Our guide on finding a rhinoplasty surgeon lists other questions to ask any surgeon.

What if you think you might have a bleeding disorder?

Because the NHS says von Willebrand disease is sometimes found only after unusual bleeding in surgery, it makes sense to raise your concern before the operation, not after. Talk to your GP or the clinician who manages your general health about whether testing makes sense. The decision on tests and timing is theirs, and it may delay your surgery date. See also our guide on nosebleeds after rhinoplasty for what hospitals consider expected bleeding and what to report.

Sources

All pages were opened and checked on 10 October 2026.