Most nosebleeds stop within ten minutes with correct first aid. A small number do not and those can be life-threatening. A posterior nosebleed (from the back of the nasal cavity) can pour blood fast enough to cause haemodynamic instability (dangerously low blood pressure) and aspiration (blood entering the airway). Patients on blood thinners can bleed for hours from a minor nasal vessel. The critical skill is knowing which nosebleeds are emergencies.

What is a Nosebleed?

A nosebleed (medically called epistaxis) is bleeding from the nasal cavity. The nose contains a rich network of blood vessels, particularly in the front part of the nasal septum - the wall that separates the two nostrils. This area known as Kiesselbach's plexus (Little's area), is responsible for most nosebleeds because the blood vessels here are small, delicate and close to the surface.

Anterior epistaxis (front of septum) is the most common and is mild, visible,and controllable with pressure. Posterior epistaxis (from the sphenopalatine artery further back) is less common but more serious and blood flows into the throat rather than forward, making it harder to control and easier to aspirate.

Common Causes of Nosebleeds

Most have a local cause and a minority signals a systemic problem. Common causes are:

• Dry air and low humidity: The nasal mucosa (inner nasal lining) dries and cracks, exposing vessels at Little's area to minor trauma
• Nose picking or rubbing: Direct trauma to the nasal mucosa; the most common cause in children
• Nasal infection or allergy: Colds, sinusitis (sinus infection) or allergic rhinitis (hay fever) inflame the mucosa and increase bleeding risk
• Anticoagulant and antiplatelet medication: These medicines impair clotting and nosebleeds on these drugs are often prolonged
• Hypertension: Severe hypertension can cause posterior epistaxis and should be treated as a hypertensive emergency 
• Trauma: A blow, fall or road accident can fracture nasal bones and tear larger vessels
• Nasal polyps, tumours or foreign bodies: Unilateral (one-sided) recurrent nosebleed needs investigation to exclude a mass lesion
• Clotting disorders: Haemophilia, von Willebrand disease, and thrombocytopenia (low platelet count) all cause severe or recurrent epistaxis.

Signs and Symptoms of Nosebleeds

The symptoms of a nosebleed vary depending on the source and severity of the bleeding:

• Bleeding from one or both nostrils 
• Blood draining into the throat 
• Nasal blockage or a feeling of fullness in the nose
• Spitting or coughing blood due to blood trickling down the throat
• Pallor, light-headedness, or feeling faint 
• Rapid heart rate with low blood pressure 
• Severe headache with very high blood pressure 
• Bruising elsewhere, bleeding gums or blood in urine indicate systemic clotting problem needing haematological investigation.

First Aid for Nosebleed (Before Reaching Hospital)

Correct first aid stops most anterior nosebleeds without hospital treatment:

• Sit upright and lean forward: Sitting upright reduces pressure in the nasal vessels and leaning forward allows blood to drain out of the nose rather than into the throat. Do not lean backwards.
• Pinch the soft part of the nose: Pinch the soft lower part of the nose, not the bony bridge and hold for 10 to 15 minutes without releasing to check.
• Breathe through the mouth: Keep the mouth open. Breathing through a pinched nose creates negative pressure that disrupts clot formation.
• Apply cold: A cold compress over the bridge of the nose causes vasoconstriction (blood vessel narrowing), reducing blood flow to the area.
• Do not blow the nose: Blowing dislodges the forming clot at the bleeding point. Allow at least 30 minutes after pressure is released before any gentle nasal clearance.
• Time the bleed: Note when the bleed started. If it has not stopped after 15 to 20 minutes of correct pressure or restarts immediately on release, go to an emergency department.

When to Seek Emergency Care for a Nosebleed

These situations require emergency assessment:

• Bleeding not stopping after 15 to 20 minutes of continuous pressure
• Bleeding after head injury or facial trauma (possible nasal or skull base fracture)
• Patient on anticoagulant or antiplatelet drugs 
• Blood flowing into the throat despite a forward lean as posterior epistaxis cannot be controlled by external pressure alone
• Pallor, light-headedness, or rapid heart rate 
• Severe headache with very high blood pressure alongside a nosebleed 
• Patient with a clotting disorder, liver disease, or on chemotherapy
• Recurrent one-sided nosebleeds or a visible nasal mass.

Emergency Treatment at the Hospital for Nosebleeds

Management escalates from simple measures to arterial intervention based on severity and response.

• Assessment: Doctors record blood pressure, heart rate, oxygen saturation and medication list. Full blood count, clotting screen (PT, APTT, INR) and group and screen are taken for heavy bleeds. INR (clotting speed measure) is checked immediately in warfarin patients.
• Anterior nasal packing: A nasal tampon or BIPP (bismuth iodoform paraffin paste) gauze is inserted under local anaesthetic to apply sustained pressure. Packing stays for 24 to 48 hours; the patient is admitted overnight.
• Posterior nasal packing or balloon: If anterior packing fails, a balloon catheter inflated in the nasopharynx (the space behind the nose) applies pressure to the posterior nasal cavity. ICU level monitoring is standard, given the significant risk of hypoxia (low oxygen), vasovagal events (sudden heart rate and blood pressure drops) and aspiration.
• Reversal of anticoagulation: Patients on anticoagulants with elevated INR are given IV vitamin K and, in life-threatening haemorrhage prothrombin complex concentrate (PCC). 
• Cautery: If the bleeding point is visible on anterior rhinoscopy (nasal examination with a light and speculum), it is cauterised with silver nitrate or electrical cautery to seal the vessel.
• Arterial embolisation or ligation: For posterior epistaxis unresponsive to packing, an interventional radiologist performs embolisation (blocking the feeding artery through a catheter). Surgical ligation of the arteries is reserved for failed embolisation.

What Not to Do

These actions prolong bleeding or cause additional harm:

• Do not tilt the head back as blood runs into the throat, causing nausea, vomiting, or airway aspiration
• Do not stuff tissue deep into the nostril 
• Do not blow the nose 
• Do not remove hospital-placed nasal packing without medical advice 
• Do not take aspirin or NSAIDs after a nosebleed 
• Do not resume strenuous activity, hot drinks or alcohol for 24 hours.

Conclusion

Most nosebleeds are anterior, self-limiting and respond to correct pressure. Those that do not like posterior bleeds, bleeds on anticoagulants or bleeds with haemodynamic compromise carry severe risks. At CARE Hospitals, the emergency team assesses severity rapidly, reverses anticoagulation where needed, places packing under appropriate monitoring and arranges ENT review for cautery or arterial intervention when packing fails.

FAQs

1. What should I do immediately during a nosebleed?

If you experience nosebleed you should:

• Sit upright, lean forward and pinch the soft lower nose firmly for 10 to 15 minutes
• Breathe through the mouth
• Apply a cold compress to the nose bridge
• Go to the hospital if bleeding does not stop.

2. Why do nosebleeds happen suddenly?

Most arise from dry or fragile nasal mucosa at Little's area on the front of the septum. Sneezing, blowing, or a minor knock ruptures the surface vessels when the lining is dry or inflamed.

3. When is a nosebleed considered an emergency?

A nosebleed is considered an emergency when:

• Bleeding continues after 15 to 20 minutes of sustained pressure
• Blood draining into the throat
• Pallor, faintness or rapid heart rate
• Nosebleed after head trauma
• Patient on blood thinners or with a clotting disorder.

4. Should I tilt my head back during a nosebleed?

No tilting back sends blood into the throat, causing nausea, vomiting, or aspiration; always lean forward.

5. What causes frequent nosebleeds?

Usually a dry or fragile mucosal vessel that has not fully healed causes frequent nosebleeds, which benefit from nasal moisturising and cautery if persistent. If nosebleeds are accompanied by easy bruising or bleeding elsewhere further evaluation for a clotting disorder is needed.

6. Can high blood pressure cause nosebleeds?

Mild to moderate hypertension alone does not directly cause nosebleeds. Severe hypertension above 180/120 mmHg is associated with posterior epistaxis and should be treated as a hypertensive emergency.

7. What should I avoid after a nosebleed?

Avoid nose blowing, strenuous activity, hot food and drinks, alcohol, aspirin and NSAIDs for 24 hours - all increase rebleeding risk through vasodilation or platelet impairment.

CARE Medical Team