What is the medical term for a nosebleed?

The medical term for a nosebleed is epistaxis. This term specifically refers to the bleeding that occurs from the nostrils or nasal cavity. It is derived from the Greek word "epistazo," which means to drip or flow out.

Rhinorrhea, on the other hand, denotes a runny nose, typically due to allergies or infections, and does not imply bleeding. Hemoptysis refers to coughing up blood from the respiratory tract, which is unrelated to nasal bleeding. Sinusitis is an inflammation of the sinuses, which may involve congestion or pressure but does not specifically refer to bleeding. Understanding these distinctions helps clarify the correct choice in the context of medical terminology.