Upper respiratory tract infections have different symptoms depending on the cause and the location involved, mainly including the following: 1. Common cold: cough, runny nose, dry and itchy throat; 2. Acute viral pharyngitis: itchy throat, sore throat, burning sensation in the throat; 3. Adenovirus infection: hoarseness, accompanied by fever, headache, cough, with edema and congestion in the pharynx; 4. Pharyngolaryngitis: obvious and long-lasting sore throat, congestion, edema, erosion in the pharynx, swelling of the tonsils, or surface covered with ulcers, ulcers, white mucous membrane, surrounding redness.