Upper respiratory tract infections may cause nasal symptoms such as nasal congestion and runny nose, pharyngeal symptoms such as sore throat and cough, and systemic symptoms such as fever and fatigue. 1. Nasal symptoms: upper respiratory tract infections are generally caused by rhinovirus, adenovirus, pneumococcal hemolytic streptococcus and other pathogens infecting the respiratory tract, can cause nasal congestion, runny nose, sneezing and other nasal symptoms. 2. Pharyngeal symptoms: children’s upper respiratory tract infections can also involve the pharynx can appear sore throat, pharyngeal itch, tonsil enlargement and other symptoms. 3. Systemic symptoms: upper respiratory tract infections can also cause fever, muscle aches, fatigue and other systemic symptoms. There are many other symptoms of upper respiratory tract infections in children, if you suffer from upper respiratory tract infections, you need to consult a doctor in a timely manner, under the guidance of the doctor active treatment.