What is a common respiratory symptom associated with measles?

Runny nose is a common respiratory symptom associated with measles because one of the initial presentations of the infection includes upper respiratory tract symptoms. Measles typically starts with the prodromal phase, characterized by a high fever, cough, conjunctivitis, and a runny nose, also called rhinorrhea. These symptoms arise as the virus infects the respiratory epithelium, leading to inflammation and increased mucus production.

This symptom, along with others like cough and conjunctivitis, often appears before the characteristic measles rash. Understanding the respiratory manifestations of measles helps healthcare professionals identify the illness early, especially given its contagious nature. Recognizing these symptoms can ensure timely isolation and treatment, which is crucial in preventing outbreaks.