Nosebleeds (Epistaxis) and Blood Type: No Direct Link
Blood type (ABO/Rh) does not influence nosebleed frequency or severity. Epistaxis results from local nasal factors:
- Dry air (low humidity) → mucosal cracking.
- Allergic rhinitis → inflammation, vascular fragility.
- Deviated septum → turbulent airflow, mucosal erosion.
- Infections (URI, sinusitis) → congestion, friable mucosa.
- Trauma (nose picking, facial impact).
- Medications (anticoagulants, NSAIDs, topical steroids).
- Systemic: hypertension, coagulopathy, liver disease.
First aid: Pinch soft nasal cartilage for 10–15 min, lean forward, apply ice to bridge. Seek care if bleeding >20 min, recurrent, or on anticoagulants.
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