Swollen, sore, dry and itchy throat is mainly seen in infectious diseases, such as common cold, acute pharyngitis, acute laryngitis, acute tonsillitis and so on. 1. Common cold: Influenza virus, respiratory syncytial virus, etc. can cause common cold, with symptoms such as nasal congestion, pharyngeal discomfort, and itchy throat. 2. Acute pharyngitis: viral and bacterial infections can lead to acute pharyngitis, in which patients may experience dry and itchy pharynx. As the disease progresses, symptoms such as pharyngeal swelling and pain can occur. 3. Acute laryngitis: Excessive use of voice, inhalation of irritating gases and other factors can lead to inflammation of the larynx, and patients may experience symptoms such as swelling and pain in the throat. 4. Acute tonsillitis: common in children and adolescents. Patients will experience symptoms such as sore throat and chills. If you have a swollen, sore, dry and itchy throat, it is recommended that you go to the hospital to find out the cause and get timely treatment.