Epistaxis, commonly known as a nosebleed, is the bleeding that occurs from the nasal cavity, usually from fragile blood vessels in the front part of the nose (Kiesselbach’s plexus). It can be caused by trauma, dry air, infections, allergies, medications, or underlying medical conditions such as hypertension or bleeding disorders. Most cases are mild and self-limiting, though severe or recurrent bleeding may require medical evaluation. Management typically involves direct pressure, nasal packing, or cauterization in persistent cases, while addressing any underlying causes to prevent recurrence.