What are the symptoms of respiratory infection?

Miao Yuqing: Respiratory tract infection can be divided into upper respiratory tract infection and lower respiratory tract infection: upper respiratory tract infection mainly refers to the parts above the throat, including nose, pharynx and larynx, including colds, pharyngitis, tonsillitis, laryngitis and other diseases. Symptoms of a cold include runny nose, itchy nose, sneezing, dry nose, slight cough, fever and headache. The symptoms of pharyngitis are dry and itchy throat, dry cough and no phlegm. The main symptoms of tonsillitis are sore throat, aggravated pain after swallowing and fever; The main symptom of laryngitis is sore throat with cough, and the cough sound is very special (like the barking of a puppy), usually accompanied by fever. Lower respiratory tract infection mainly refers to the parts below the larynx, including trachea, bronchi and lungs. Common diseases are tracheitis, bronchitis and pneumonia. The specific symptoms are mainly severe cough, excessive phlegm, dyspnea, rough texture and patchy shadows in the lungs. (Source: Road to Health) For details, please refer to children's recurrent respiratory infections in winter.