Suddenly the throat huge itch a burst of violent cough, consider and allergic pharyngitis, inhalation irritation, acute pharyngitis and other factors related. 1. Allergic pharyngitis: allergic patients, if inhaled allergens, such as dust, dust mites, pollen, animal fur, etc., can cause an allergic reaction, resulting in itchy throat, and even cause a violent cough. 2. Inhalation irritation: If foreign substances such as smoke, dust and corrosive physical and chemical substances are inhaled, they may cause obvious nerve irritation symptoms to the throat, leading to throat itching and a violent cough. 3. Acute pharyngitis: patients in the decline in resistance, can be due to viral infections leading to increased sensitivity of the laryngeal mucosa nerves, when inhaling cold air or sensory nerves are stimulated by inflammatory factors can be no sign of this symptom. Itchy throat cough, symptoms continue to not subside, it is recommended to the hospital otorhinolaryngology consultation, systematic examination after a clear diagnosis.