The presence of an itchy trachea and a constant urge to cough without phlegm is likely to be an allergic cause of an allergic cough, which is often an irritating dry cough that also feels like an itchy trachea. You need to get away from the allergen quickly, or go to the hospital to have the allergen checked and avoid allergen exposure in the future. In addition, anti-allergy medications such as loratadine, cetirizine hydrochloride, and paracetamol need to be taken for treatment. In the case of infants and children under ten years old, it is recommended to take desloratadine, which is relatively safe. If the cough still cannot be stopped, nebulized inhalation of bronchodilators is needed for treatment. Terbutaline sulfate and salbutamol are more commonly used clinically and are effective. However, these two drugs are generally not used alone, it is recommended to use together with glucocorticoids, and often clinically nebulized inhalation with budesonide, for the treatment of dry cough without phlegm, the effect is relatively good.