There are many reasons for coughing and throat tickling, such as postnasal drip syndrome, allergic pharyngitis, reflux pharyngitis and other diseases. 1. Postnasal drip syndrome: chronic rhinitis, sinusitis can occur in the nasal secretion increases, through the nasopharynx to the throat, causing coughing, coughing up phlegm, throat itching and other irritating symptoms. 2. Allergic pharyngolaryngitis: Inhalation or contact with allergens triggers an allergic reaction, resulting in cough, throat itching and other symptoms. 3. Reflux pharyngitis: stomach contents reflux to the throat, can appear pharyngeal dryness, foreign body sensation, irritating cough and other discomforts. The symptoms of coughing and throat itching should be actively consulted in regular hospitals, and the diagnosis should be clarified after systematic examination.