Epistaxis, or nosebleed, is commonly caused by local trauma or irritation to the nasal mucosa. The most common site of bleeding is Little's area, located in the anterior nasal septum. Epistaxis can also occur from other sites like the posterior nasal cavity (Woodruff's plexus) or retrocolumellar vein. Management involves initial measures like pinching the nose or nasal packing. For persistent or severe bleeding, procedures like electrocautery, arterial ligation or embolization may be needed. Epistaxis should be properly evaluated to identify and treat any underlying local or systemic causes.