Itchy throat and stuffy nose may be related to common cold, allergic rhinitis, sinusitis and other causes. 1. Common cold: acute upper respiratory tract infections caused by viruses can cause nasal congestion, itchy throat, sore throat and other uncomfortable symptoms. 2. Allergic rhinitis: If the nasal cavity inhales pollen and other allergenic substances, it can cause the body to undergo an abnormal immune response, and symptoms such as itchy nose, itchy throat and nasal congestion can occur. 3. Sinusitis: viruses, bacteria and other infectious factors cause inflammation of the mucous membrane and submucosal tissues, nasal congestion, runny nose and other symptoms, nasal secretion backflow can cause itchy throat. Itchy throat, nasal congestion, it is recommended to go to the hospital in a timely manner, to clarify the cause of the disease, standardized treatment under the guidance of the doctor.