Nosebleeding occurs due to tears in the mucosal lining and the many small blood vessels it contains. Fragility or injury may cause the tears, while inflammation, coagulation problems and other disorders may make the injury more difficult to repair. In some patients, rupture of nasal blood vessels is spontaneous.
Epistaxis pathophysiology
Anaphylaxis pathophysiology
Volvulus pathophysiology
Sepsis pathophysiology
Allergy pathophysiology
Tetanus pathophysiology
Gangrene pathophysiology
Thrombosis pathophysiology