A muffled voice in a two-week-old baby usually suggests edema of the vocal cords or inflammation of the vocal cords. If the child has no fever, no other clinical signs of discomfort and no cough, and the hoarseness is preceded by violent crying, it may be due to crying. You can do nebulization, commonly used budesonide nebulizing solution nebulization, should be able to recover. If the voice is mute for a long time, there are no other clinical symptoms, usually pay attention to the vocal folds local problems, such as whether the growth of the vocal folds cysts, vocal folds nodules, etc., to see the otorhinolaryngology outpatient clinic, to do a rhinoscopy to learn about the specifics of the vocal folds, and the appropriate treatment treatment. If your baby’s voice is muffled and accompanied by fever and cough, acute laryngitis caused by bacterial or viral infections is usually considered an emergency and should be treated immediately in a pediatric emergency room or an ENT emergency room. Because the vocal folds are the narrowest part of the respiratory tract, edema and inflammation can easily block the respiratory tract, resulting in a dangerous situation. Upon arrival at the hospital, routine blood work with C-reactive protein is needed to assess the infection, and photographs are needed to understand the condition of the lungs. You can use budesonide nebulizer solution to nebulize, or dexamethasone intravenously, or oral prednisone, etc., to reduce the edema of the vocal folds, and antibiotics are needed to fight infection if there is a bacterial infection.