Upper respiratory tract infections, also known as URIs, refer to acute inflammation occurring from the external nostril to the lower edge of the cricoid cartilage, commonly affecting the nasal cavities, pharynx, and larynx. Most patients with upper respiratory infections experience mild symptoms and a short disease course, generally having a good prognosis with self-recovery. However, a small subset of upper respiratory tract infections can lead to complications such as sinusitis, otitis media, and tracheobronchitis. Some infections that manifest primarily as pharyngitis can lead to secondary conditions like rheumatic fever and glomerulonephritis caused by Streptococcus. In these cases, the prognosis may not be as favorable. Additionally, a small number of patients might develop more severe illnesses, such as viral myocarditis, which significantly affects the prognosis. Therefore, upper respiratory tract infections should not be underestimated, and proactive prevention and treatment are essential.