Bleeding

Overview

Bleeding is the loss of blood from the body's blood vessels. It can happen on the outside, like a cut or nosebleed, or on the inside, where you cannot see it. Most bleeding is minor and stops quickly, but some bleeding can be a sign of a health problem that needs medical care.

Bleeding is very common — everyone experiences minor bleeding from time to time. Abnormal or concerning bleeding is also common, affecting many people at some point in their lives, whether it is frequent nosebleeds, heavy periods, or easy bruising.

Anyone can experience bleeding, but it may affect people who take blood-thinning medicines, those with blood disorders, women with heavy menstrual bleeding, older adults, and people with conditions such as liver or kidney disease. Children often have nosebleeds and minor injuries from falls.

Symptoms

Common symptoms

• Minor cuts and scrapes that bleed a little and then stop
• Nosebleeds, often from dry air or picking the nose
• Bleeding gums when brushing or flossing teeth
• Heavy or prolonged menstrual periods
• Blood in urine (pink, red, or brown urine) or in stool
• Easy bruising (large bruises from very small bumps)

Symptoms in children

• Nosebleeds, especially in dry weather
• Bleeding from scraped knees or elbows that usually stops with pressure
• Bleeding from a small cut that needs a plaster
• Frequent bruises from active play

Symptoms in older adults

• Bleeding gums from brushing teeth
• Bruising easily on arms and legs
• Blood in urine or stool, which can be a sign of an internal issue
• Slow healing or bleeding from small wounds

Causes

Main causes

• Injury or trauma, such as cuts, grazes, or a blow to the body
• Blood-thinning medicines (for example, anticoagulants or antiplatelet drugs)
• Vitamin deficiencies, especially vitamin K or vitamin C
• Blood disorders such as haemophilia or low blood platelets (thrombocytopenia)
• Liver disease, which can affect blood clotting
• Hormonal changes or conditions of the uterus in women, leading to heavy periods
• Polyps, ulcers, or sometimes growths in the bowel, bladder, or uterus that can bleed

Risk factors

• Taking blood-thinning medicines for other health conditions
• A family history of bleeding disorders
• Heavy alcohol intake, which can harm the liver and affect clotting
• Conditions that make the inside of the body fragile, such as chronic kidney or liver disease
• Older age, as skin and blood vessels become thinner and more fragile

When to see a doctor

See a doctor urgently if:

• You have any of the emergency symptoms listed above
• You pass blood in your urine or stool, or you cough up blood
• You have heavy bleeding from the rectum or vagina that is unusual for you
• You feel dizzy, lightheaded, very weak, or faint along with bleeding
• You are on blood thinners and have an injury that bleeds a lot or does not stop

Book a routine appointment if:

• You bruise easily without any clear reason
• You have frequent nosebleeds that are difficult to stop
• You have very heavy or painful periods that affect your daily life
• Your gums bleed often when brushing, or you notice other new bleeding
• You have bleeding that keeps coming back without a known cause
• You have a family history of bleeding problems and you are worried about your own risk

Diagnosis

Your doctor will start by talking to you about your medical history, how the bleeding started, what medicines you take, and whether you have any other symptoms. They will examine you and may check your skin, gums, nose, or abdomen. Based on what they find, they may order tests to look for an underlying cause.

Tests that may be done

• Blood tests: to check your red blood cells, platelets, and how well your blood can clot
• Urine test: to look for blood or other signs of infection
• Stool test: to check for hidden (occult) blood in the bowel
• Imaging tests, like an ultrasound or CT scan, if your doctor needs to look inside your body
• Endoscopy or colonoscopy to look directly into your stomach or bowel if bleeding is suspected there

What to expect at your appointment

Diagnosing the cause of bleeding is usually a step-by-step process. Your doctor may refer you to a specialist, such as a haematologist, gastroenterologist, or gynaecologist, depending on where the bleeding is. Most tests are done in an outpatient clinic, and many bleeding causes can be found and treated without needing a hospital stay.

Treatment

Treatment for bleeding depends entirely on what is causing it. For minor bleeding, the first step is always to press firmly on the wound with a clean cloth for a few minutes. For abnormal or repeated bleeding, your doctor will focus on treating the underlying condition. This might mean adjusting medicines, giving vitamin therapy, or using procedures to stop and prevent bleeding.

Self-care at home

• For cuts and scrapes: clean the wound gently, apply pressure with a clean cloth or bandage for 10 minutes, then cover with a sterile plaster.
• For nosebleeds: sit up, lean slightly forward, pinch the soft part of your nose for 10 minutes, and breathe through your mouth.
• Use a soft-bristled toothbrush to reduce gum bleeding.
• If you have heavy periods, use period products that suit your flow and track your bleeding so you can tell your doctor.
• Avoid picking your nose or blowing too hard if you have nosebleeds.

Medical treatments

Depending on the cause, your doctor may recommend medicines to support blood clotting, vitamin supplementation for deficiencies, or medicines to treat an infection, ulcer, or hormonal imbalance. If you are taking blood thinners, your doctor may adjust the dose or advise you on monitoring, but never stop or change any prescribed medicine without speaking to your healthcare provider. In some cases, you may be referred to a specialist for procedures to stop bleeding, such as cauterisation (heat or a chemical to seal a small blood vessel), or to treat the underlying problem.

When is surgery considered?

Surgery is only needed for certain causes of bleeding, such as removing polyps, repairing an ulcer, or removing a growth that is bleeding. These operations are usually planned and done only after other treatments have been tried or if the bleeding is severe.

Living with this condition

If you have a bleeding disorder or take medicines that affect bleeding, it helps to plan ahead. Tell your doctor and dentist about your bleeding risk before any surgery or dental work. Carry a small first-aid kit, learn how to press properly on wounds, and always keep sterile dressings at home.

Lifestyle tips

• Wear protective gloves when gardening or cooking with sharp knives.
• Use a helmet or padding when doing activities that might cause falls or knocks.
• Avoid heavy alcohol intake, because alcohol can damage your liver and affect blood clotting.
• Be careful with over-the-counter medicines — some, like high-dose aspirin, can increase bleeding, so ask a pharmacist first.
• If you have frequent nosebleeds, keep the inside of your nose moist with saltwater spray or a little petroleum jelly.

Diet and exercise

A healthy, balanced diet helps your body produce blood and clot normally. Include iron-rich foods like lean meat, beans, spinach, and fortified cereals to replace iron lost through bleeding. Leafy green vegetables are a good source of vitamin K, which helps clotting. Regular, moderate exercise is generally good for you, but avoid high-risk sports if you have a bleeding disorder, and always warm up to prevent injury.

Mental health and emotional wellbeing

Seeing blood or having unexpected bleeding can be frightening and stressful. It is normal to feel anxious, especially when the cause is unclear. Talk to your doctor about your worries. Managing stress with deep breathing, gentle activity, and speaking to someone you trust can help you feel more in control.

Prevention

Not all bleeding can be prevented, but many common causes can. Keep your surroundings safe to prevent falls, use sharp objects carefully, and wear protective gear during activities that could cause injury. Practising good oral hygiene can prevent gum bleeding, and managing health conditions like high blood pressure or liver disease reduces your bleeding risk. If you are on a blood thinner, attend regular check-ups and never change your dose without medical advice.

Complications

If left untreated

• Ongoing blood loss can lead to anaemia, causing tiredness, weakness, and shortness of breath.
• Severe or continued bleeding can cause a sudden drop in blood pressure and lead to shock, which is a medical emergency.
• If bleeding comes from a more serious condition such as an ulcer or bowel problem, leaving it undiagnosed could make the underlying disease worse.
• Frequent bleeding may also cause anxiety and reduce quality of life if left unaddressed.

Long-term outlook

The outlook for bleeding is generally very good. Most minor bleeding stops on its own or with simple first aid. When bleeding is a sign of a deeper issue, many causes can be successfully treated or managed once they are found. If you seek medical advice for any persistent or unusual bleeding, you give yourself the best chance for an accurate diagnosis and effective treatment, helping you to live a full and active life.

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