Dryness, itching and foreign body sensation in the throat are the clinical symptoms of acute laryngitis. Acute laryngitis (acutelaryngitis) is an acute catarrhal inflammation of the laryngeal mucosa, often secondary to acute rhinitis, sinusitis, acute pharyngitis, part of the entire upper respiratory tract infection, can also occur alone. Acute laryngitis can also be caused by shouting, excessive use of the voice, and violent coughing. If it occurs in children, the condition is more serious. The causes of dry and itchy throat: 1, lower body resistance: after cold and flu, the whole body resistance is lowered, which can induce acute laryngitis. At the beginning, it is mostly viral infection, and then bacteria take advantage of the situation (which is common with pneumococcus, influenza bacillus, hemolytic streptococcus, etc.). 2, occupational factors: actors, teachers, salesmen and other excessive use of voice, factory and mine workers inhale too much productive dust or harmful gases (such as chlorine, ammonia, bromine, iodine, nitric acid, sulfuric acid, pesticides, etc.). 3.Acute infectious diseases: This disease often occurs in combination with acute infectious diseases such as measles, whooping cough, influenza and scarlet fever. 4, trauma: laryngeal foreign body irritation, injury to inspection instruments (such as direct laryngoscopy, tracheoscopy, tracheoscopy bruises). General symptoms are not obvious, light only hissing, voice coarse, low, hoarse, later can gradually aggravate, or even complete loss of voice, laryngeal pain and general malaise, individual patients may have fever, chills and other symptoms. Other symptoms are cough, phlegm, dryness of the throat, tingling and foreign body sensation. Inspiratory dyspnea may also occur in severe cases of laryngeal swelling, but rarely occurs in adults.