What is a common symptom of measles?

A common symptom of measles is a red skin rash and fever. Measles typically presents with a high fever that starts a few days after the initial infection, often accompanied by other symptoms like a runny nose and red eyes. The characteristic red rash usually appears several days after the fever begins, spreading from the head and face to the rest of the body. This combination of fever and rash is distinctive for measles, making it a key identifying feature of the disease.

In contrast, the other symptoms associated with the other options do not align with measles. Jaundice is related to liver issues and not measles, while joint pain and swelling are more typical of other illnesses, such as arthritis. Lastly, a persistent cough with mucus can be indicative of respiratory infections but is not specific to measles, where the cough is usually dry and accompanied by the hallmark rash and fever instead.