You have always had heavy periods. You bruise so easily that you sometimes cannot remember where the marks came from. Your gums bleed during dental cleanings, and a small cut seems to take forever to stop bleeding.
But because each symptom has been explained away separately, no one has connected the dots.
The bruises are blamed on clumsiness. The nosebleeds are blamed on dry air. The heavy periods are described as a family trait. Excessive bleeding after dental work, surgery, or childbirth is treated as an isolated complication.
Sometimes, however, those symptoms are part of the same condition.
Von Willebrand disease, commonly abbreviated as VWD, is an inherited bleeding disorder in which the blood does not clot properly. It can cause heavy menstrual bleeding, easy bruising, frequent nosebleeds, bleeding gums, and prolonged bleeding after injuries, surgery, dental procedures, or childbirth.
VWD affects women and men, but women may be more likely to notice symptoms because menstruation, pregnancy, delivery, and gynecological procedures create additional opportunities for abnormal bleeding to appear.
Having heavy periods does not automatically mean you have a bleeding disorder. Fibroids, adenomyosis, hormonal changes, thyroid conditions, medications, pregnancy complications, and other health problems can also cause abnormal bleeding.
But when heavy periods occur alongside easy bruising, frequent nosebleeds, bleeding after dental work, or a family history of similar problems, it is time to consider whether the issue may extend beyond the uterus.
What Is Von Willebrand Disease?
Von Willebrand disease is named after the physician Erik von Willebrand, who first described the condition in the 1920s. It involves a clotting protein called von Willebrand factor, or VWF.
When a blood vessel is injured, platelets travel to the damaged area and begin forming a plug. Von Willebrand factor helps platelets attach to the injured blood-vessel wall and to one another. It also carries and protects factor VIII, another protein involved in blood clotting.
A person with VWD may:
Have too little von Willebrand factor
Produce a form of the protein that does not work properly
Have a severe deficiency of the protein
Without enough properly functioning VWF, the body may have difficulty creating a stable clot. Bleeding can last longer than expected, restart after appearing to stop, or become unusually heavy during menstruation, childbirth, surgery, or dental procedures.
VWD is considered the most common inherited bleeding disorder. Although it often runs in families, the symptoms and severity can vary significantly, even among relatives who have the same condition.
Some people have mild symptoms that go unnoticed for years. Others experience bleeding serious enough to cause anemia, require medical treatment, or complicate surgery and childbirth.
The Different Types
Von Willebrand disease is divided into several types based on the amount and function of von Willebrand factor.
Type 1
Type 1 is the most common form. The body produces von Willebrand factor, but the amount is lower than expected.
Symptoms are often mild to moderate. A person may not be diagnosed until a dental extraction, surgery, delivery, or another event causes prolonged bleeding.
Type 2
In Type 2 VWD, the body produces von Willebrand factor, but the protein does not work correctly.
Type 2 includes several subtypes—2A, 2B, 2M, and 2N. The differences involve how the protein interacts with platelets, factor VIII, or other parts of the clotting process. Specialized laboratory testing may be needed to identify the correct subtype.
Type 3
Type 3 is the rarest and most severe form. People with Type 3 have extremely low levels—or almost no measurable amount—of von Willebrand factor. Factor VIII levels may also be very low.
This form can cause serious spontaneous bleeding, including bleeding into muscles or joints, in addition to mucosal bleeding such as nosebleeds and heavy periods.
The specific type matters because treatments that work for one person may not be safe or effective for another.
Symptoms in Women
Von Willebrand disease commonly causes mucocutaneous bleeding, meaning bleeding from the skin and moist surfaces such as the nose, mouth, reproductive tract, and digestive tract.
Possible symptoms include:
Heavy or prolonged menstrual periods
Flooding or gushing during a period
Passing large menstrual clots
Soaking through pads or tampons unusually quickly
Easy or unexplained bruising
Frequent nosebleeds
Nosebleeds that are difficult to stop
Bleeding gums
Prolonged bleeding from small cuts
Excessive bleeding after dental procedures
Heavy bleeding during or after surgery
Heavy bleeding after childbirth
Anemia caused by ongoing blood loss
A family history of similar bleeding symptoms
A woman with VWD may experience periods lasting longer than seven days, soak through protection every one to two hours, pass large clots, or have a history of anemia related to menstrual blood loss.
Not every person has every symptom. Someone may have severe menstrual bleeding but few nosebleeds, while another person may experience bruising and dental bleeding without recognizing her periods as abnormal.
When Heavy Periods Are a Clue
Heavy menstrual bleeding can result from many conditions, and VWD is only one possibility. The clue is often the larger bleeding pattern.
Heavy periods may warrant investigation for a bleeding disorder when they:
Began with the first menstrual period
Have been consistently heavy rather than changing only recently
Last longer than seven days
Cause flooding or frequent bleeding through clothing or bedding
Require changing protection every one to two hours
Produce large clots
Have caused iron deficiency or anemia
Occur alongside frequent nosebleeds or easy bruising
Are accompanied by prolonged bleeding after dental work
Occur in several women or men within the same family
ACOG recommends considering VWD and other bleeding disorders when evaluating heavy menstrual bleeding at any age. Heavy bleeding since the first period, combined with postpartum hemorrhage, surgical bleeding, bruising, nosebleeds, bleeding gums, or a family history, raises concern for an underlying clotting disorder.
Heavy bleeding during adolescence can be an especially important clue. A first period that results in extreme bleeding, hospitalization, blood transfusion, or severe anemia should not automatically be dismissed as the body “adjusting to hormones.” ACOG recommends evaluating adolescents with heavy menstrual bleeding for anemia, endocrine causes, and possible bleeding disorders.
It May Run in Families
Because VWD is commonly inherited, the bleeding history of relatives can be valuable. However, many families never receive a formal diagnosis.
Instead, relatives may describe themselves as:
“Easy bleeders”
“People who always bruise”
“Women with terrible periods”
“People who bleed a lot during surgery”
“People who cannot take aspirin”
“Women who hemorrhage after childbirth”
A family history is not always obvious because bleeding symptoms may look different from one relative to another. Men do not menstruate or give birth, so an affected father, brother, or grandfather may mainly report nosebleeds, bruising, or excessive bleeding after dental work or surgery.
A lack of known family history does not necessarily rule out VWD. A relative may have been mildly affected, misdiagnosed, or never tested. Some cases may also arise from a new genetic change rather than one previously recognized in the family.
Before your appointment, ask relatives about:
Frequent or severe nosebleeds
Excessive bruising
Heavy periods
Anemia
Bleeding after childbirth
Bleeding after tonsil surgery, wisdom-tooth extraction, or other procedures
Blood transfusions after surgery or delivery
A diagnosed clotting or platelet disorder
That history may reveal a pattern that did not seem meaningful when each event was considered separately.
Bleeding After Childbirth
Pregnancy can complicate the recognition of VWD because von Willebrand factor and factor VIII levels often rise during pregnancy. This rise may temporarily improve laboratory measurements and reduce bleeding in some patients, but levels may fall again after delivery.
Women with VWD can face an increased risk of heavy bleeding during delivery or delayed postpartum bleeding after returning home. The condition may first become apparent after an unexpectedly severe postpartum hemorrhage.
Anyone with known or suspected VWD should ideally have a coordinated pregnancy and delivery plan involving obstetric and hematology care. The team may monitor clotting-factor levels, plan medication when necessary, consider anesthesia implications, and prepare for postpartum bleeding.
Warning signs after delivery include:
Soaking through a pad in an hour
Passing clots larger than expected
Bleeding that suddenly becomes heavier
Dizziness, faintness, or weakness
Rapid heart rate
Shortness of breath
Pale or clammy skin
Severe pelvic or abdominal pain
Heavy postpartum bleeding can become an emergency regardless of its cause. Immediate medical evaluation is essential.
Iron Deficiency and Anemia
Chronic menstrual blood loss can gradually deplete the body’s iron stores. A woman may develop iron deficiency before her hemoglobin becomes low enough to meet the definition of anemia.
Possible signs include:
Persistent fatigue
Weakness
Reduced exercise tolerance
Shortness of breath
Headaches
Dizziness
Brain fog
Heart palpitations
Pale skin
Feeling unusually cold
Hair shedding
Brittle nails
Craving ice or nonfood substances
Women with heavy periods and suspected bleeding disorders should be evaluated for anemia and iron deficiency. In adolescents with heavy menstrual bleeding, ACOG specifically recommends assessing anemia from blood loss, including obtaining serum ferritin.
Iron treatment can restore depleted iron, but it does not correct the condition causing continued blood loss. Both sides of the problem matter: the iron deficiency must be treated, and the excessive bleeding must be controlled.
Do not begin high-dose iron solely because you feel tired. Similar symptoms can occur with thyroid disease, sleep disorders, nutritional deficiencies, heart conditions, and other health problems. Blood testing helps determine whether iron is actually needed.
How VWD Is Diagnosed
Von Willebrand disease cannot be diagnosed from symptoms alone, and there is no single blood test that identifies every case.
Evaluation begins with a detailed personal and family bleeding history. A clinician may ask:
How long do your periods last?
How often do you change pads, tampons, cups, or discs?
Do you experience flooding or large clots?
Have you ever been treated for anemia?
How often do you have nosebleeds?
Do your gums bleed?
Have you bled excessively after dental work?
Did you have unusual bleeding after surgery or childbirth?
Do relatives have similar problems?
Current diagnostic guidelines support using a validated bleeding-assessment tool in people with a relatively low initial probability of VWD. The tool organizes symptoms and helps determine whether specialized testing is appropriate.
Initial bloodwork may include:
Complete blood count, including platelet count
Ferritin and other iron studies
Prothrombin time, or PT
Activated partial thromboplastin time, or aPTT
Fibrinogen in some cases
However, routine clotting tests can be normal in people with VWD. A normal platelet count, PT, or aPTT does not reliably exclude the disease, particularly when symptoms are mild.
More specific testing may include:
Von Willebrand factor antigen
Von Willebrand factor activity
Factor VIII activity
Von Willebrand factor multimer analysis
Platelet-function testing
Additional testing to identify a VWD subtype
A hematologist generally interprets these results alongside the patient’s bleeding history.
Why Testing May Be Repeated
Von Willebrand factor levels can change. Stress, illness, exercise, pregnancy, inflammation, estrogen exposure, and other physiological factors may affect test results.
For this reason, a single normal result may not settle the question when the bleeding history is strongly suggestive. The CDC notes that specialized tests may need to be repeated before an accurate diagnosis is reached.
This does not mean someone should repeatedly order testing without medical guidance. It means that timing, health status, laboratory methods, and clinical history all affect interpretation.
If your results are described as borderline or “low VWF,” ask:
Were the correct VWD tests performed?
Was I ill, pregnant, under significant stress, or taking estrogen at the time?
Should the tests be repeated?
Do I need evaluation by a hematologist?
Could another platelet or clotting disorder explain my symptoms?
Do not assume that routine preoperative bloodwork automatically screened you for VWD. Standard blood counts and clotting times may not include the specialized assays needed to assess von Willebrand factor.
What Else Can Cause Bleeding?
VWD is not the only explanation for heavy periods or abnormal bleeding.
Other possibilities include:
Fibroids
Adenomyosis
Endometriosis
Endometrial polyps
Polycystic ovary syndrome
Thyroid disease
Perimenopausal hormonal changes
Pregnancy-related complications
Liver disease
Low platelet counts
Platelet-function disorders
Other clotting-factor deficiencies
Certain medications
Gynecological cancers
A person can also have more than one condition. A woman may have fibroids and a bleeding disorder, for example. Finding a structural cause on ultrasound does not always explain nosebleeds, gum bleeding, or excessive surgical bleeding.
Likewise, diagnosing iron-deficiency anemia explains the consequence of blood loss but not necessarily its original cause.
A complete evaluation considers the uterus, hormones, medications, blood count, iron status, platelets, and clotting system rather than forcing every symptom into one explanation.
Treatment Options
Treatment depends on the VWD type, severity, bleeding history, menstrual needs, pregnancy plans, and the situation in which bleeding occurs.
Tranexamic acid
Tranexamic acid is an antifibrinolytic medication. It helps prevent clots from breaking down too quickly and may be prescribed during menstrual bleeding, after certain procedures, or in other specific situations.
The 2021 international management guidelines recommend considering tranexamic acid or hormonal therapy for many women with VWD and heavy menstrual bleeding, depending on whether they wish to conceive and their individual circumstances.
Tranexamic acid is not suitable for everyone. A clinician should review clotting history, kidney function, medications, and other health factors before prescribing it.
Hormonal treatment
Combined hormonal contraception or a levonorgestrel-releasing IUD may reduce menstrual blood loss in some women with VWD. Hormonal treatment can be useful when pregnancy prevention or menstrual control is also desired.
Hormonal contraception does not treat every bleeding symptom and may not be medically appropriate for every patient.
Desmopressin
Desmopressin, also called DDAVP, can temporarily increase the release of stored von Willebrand factor and factor VIII in some people.
Not every type of VWD responds appropriately, and desmopressin can be unsuitable or potentially harmful in certain subtypes and medical situations. Some patients undergo a supervised response trial before it is included in their treatment plan.
Von Willebrand factor concentrate
People with severe VWD, certain subtypes, major bleeding, or upcoming procedures may receive a concentrate containing von Willebrand factor. This replaces the missing or defective clotting protein.
Iron treatment
Oral or intravenous iron may be needed when blood loss has caused iron deficiency or anemia. The appropriate method depends on laboratory results, symptoms, tolerance, severity, and the urgency of replacement.
Treatment should be individualized with hematology and gynecological input when heavy menstrual bleeding is a major concern.
Medications to Discuss
Some medications can interfere with platelet function or increase bleeding. Aspirin is a common example, and nonsteroidal anti-inflammatory drugs such as ibuprofen or naproxen may be problematic for some people with bleeding disorders.
Do not abruptly stop a medication prescribed for a heart condition, stroke prevention, pain, or another important reason. The risk of stopping may be greater than the bleeding risk.
Instead, tell every prescribing clinician, dentist, pharmacist, and surgeon if you have VWD or are being evaluated for a bleeding disorder. Ask which medications are appropriate for your specific diagnosis.
Before taking an over-the-counter product, check the label. Some cold medicines, headache products, and combination pain relievers contain aspirin or an NSAID.
Surgery and Dental Work
A diagnosis of VWD can change how clinicians prepare for:
Tooth extraction
Dental implants
Tonsil surgery
Colonoscopy with biopsy or polyp removal
Gynecological procedures
Cervical biopsies
Hysteroscopy
Fibroid surgery
Hysterectomy
Cesarean delivery
Other major operations
Your healthcare team may recommend medication before or after the procedure, clotting-factor replacement, local measures to control bleeding, or additional observation.
Do not wait until the morning of surgery to mention your bleeding history. If you have known or suspected VWD, alert the medical team during the planning stage so they can coordinate with hematology.
People with a confirmed diagnosis may benefit from carrying a medical alert card or keeping an emergency-health note on their phone that lists the VWD type, usual treatments, hematologist, and relevant medication precautions.
When to Seek Emergency Care
Call emergency services or obtain urgent medical care for:
Bleeding that will not stop with firm pressure
Vomiting blood
Coughing up blood
Black or bloody stool
Blood in the urine
Severe headache after a head injury
Fainting or confusion
Heavy vaginal bleeding with dizziness or weakness
Shortness of breath or chest pain
Rapid heartbeat with heavy bleeding
Severe postpartum bleeding
Bleeding after surgery that suddenly becomes heavier
Any bleeding that feels dangerous or is rapidly worsening
For menstrual bleeding, changing a pad or tampon every hour for several hours, flooding, large clots, faintness, shortness of breath, or a racing heart deserves prompt evaluation.
Do not drive yourself if you feel faint, confused, or severely weak.
Questions for Your Appointment
If your symptoms suggest a possible bleeding disorder, consider asking:
Could my heavy periods be related to a bleeding disorder?
Does my bruising or nosebleed history make VWD more likely?
Should I complete a formal bleeding-assessment questionnaire?
Do I need a CBC, ferritin, and iron studies?
Were von Willebrand factor antigen, VWF activity, and factor VIII tested?
Can routine clotting tests be normal in VWD?
Should my bloodwork be repeated?
Do I need a hematology referral?
How should I prepare for dental work or surgery?
Which pain relievers are safest for me?
What should I know before becoming pregnant?
What treatment could reduce my menstrual bleeding?
Should relatives be evaluated if I receive a diagnosis?
Bring written details about your menstrual flow, bruises, nosebleeds, dental bleeding, previous surgeries, pregnancy complications, and family history. Specific examples are more useful than simply saying, “I bleed a lot.”
The Bottom Line
Heavy periods are common, but they should not automatically be dismissed as normal especially when they occur with easy bruising, frequent nosebleeds, bleeding gums, anemia, or excessive bleeding after dental work, surgery, or childbirth.
Von Willebrand disease is an inherited bleeding disorder involving a clotting protein that helps platelets form a stable plug. Women may first recognize the condition through menstrual or obstetric bleeding, even when other relatives have never been diagnosed.
Routine blood tests can be normal, so diagnosing VWD may require specialized tests and sometimes repeat testing. A hematologist can interpret the laboratory findings alongside your personal and family bleeding history.
Most importantly, treatment exists. Depending on the individual diagnosis, options may include tranexamic acid, hormonal treatment, desmopressin, von Willebrand factor concentrate, and iron replacement.
If your entire life has been a collection of unexplained bruises, endless periods, stubborn nosebleeds, and “unexpected” bleeding after procedures, stop treating each episode like an unrelated inconvenience.
Sometimes your body is not being dramatic. Sometimes it has been leaving the same clue for years.
“This article is based on current medical guidance and research from the following trusted sources:”
Resources & Sources
Centers for Disease Control and Prevention — About Von Willebrand Disease
https://www.cdc.gov/von-willebrand/about/index.htmlCDC — Diagnosing Von Willebrand Disease
https://www.cdc.gov/von-willebrand/diagnosis/index.htmlCDC — Bleeding Disorders in Women
https://www.cdc.gov/female-blood-disorders/about/index.htmlCDC — Heavy Menstrual Bleeding
https://www.cdc.gov/female-blood-disorders/about/heavy-menstrual-bleeding.htmlAmerican College of Obstetricians and Gynecologists — Von Willebrand Disease in Women
https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2013/12/von-willebrand-disease-in-womenACOG — Screening and Management of Bleeding Disorders in Adolescents With Heavy Menstrual Bleeding
https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2019/09/screening-and-management-of-bleeding-disorders-in-adolescents-with-heavy-menstrual-bleedingAmerican Society of Hematology — VWD Diagnosis and Management Guidelines
https://www.hematology.org/education/clinicians/guidelines-and-quality-care/clinical-practice-guidelines/von-willebrand-disease-guidelinesASH, ISTH, NHF and WFH — 2021 VWD Management Guidelines
https://ashpublications.org/bloodadvances/article/5/1/301/474884/ASH-ISTH-NHF-WFH-2021-guidelines-on-the-managementOffice on Women’s Health — Bleeding Disorders
https://womenshealth.gov/a-z-topics/bleeding-disorders
Author
Becky Freeman is the founder and editor of BVTalks® and the founder of Bee Vee Clean. She creates practical, accessible education about women’s health, vaginal health, menstrual health, and preventive care.
Have your heavy periods ever occurred alongside unexplained bruising, nosebleeds, or excessive bleeding after dental work or childbirth?
Disclaimer: This post is for educational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider for personalized guidance.
