What is a common symptom of a viral upper respiratory infection?

A viral upper respiratory infection, often referred to as the common cold, typically presents with symptoms that affect the upper respiratory tract. Nasal congestion is a hallmark symptom of these infections due to inflammation of the nasal passages and increased mucus production. This congestion leads to difficulty breathing through the nose, a runny nose, and often accompanies other symptoms like a sore throat and sneezing.

Other symptoms listed, such as severe headache, chest pain, and shortness of breath, are not commonly associated with viral upper respiratory infections. Severe headaches may occur in more serious illnesses or when sinus pressure builds up, but they are not typical of a simple cold. Chest pain and shortness of breath may indicate lower respiratory issues, such as bronchitis or pneumonia, rather than a viral upper respiratory infection. Thus, nasal congestion is the most representative symptom for this condition.