Acute upper respiratory infections are very common in clinical practice, and most patients develop acute inflammatory lesions due to a viral entry into the respiratory tract. A small number of patients may also have combined bacterial or pathogenic microbial infections, leading to symptoms such as nasal congestion, runny nose, and recurrent fever of varying degrees.

In the early stages of acute upper respiratory infections, if medications are not timely and symptomatically administered, and especially if patients have low immune function and do not receive timely medication management, some patients may repeatedly experience fever. The fever is typically high, commonly seen in infants and young children. Therefore, for such patients, it is crucial to provide symptomatic medication promptly and effectively, which usually can effectively control the symptoms of recurrent fever.