The symptoms of coughing for a month require targeted treatment according to the cause of the cough. The common causes are bronchial and pulmonary infections. If it is a bronchial or lung infection, a chest CT can confirm the diagnosis. It is usually a bacterial infection and requires antibiotics for treatment, such as ceftriaxone and cefoperazone. If there is an allergy to cephalosporin, treatment can be switched to other antibiotics such as azithromycin. Another reason for a longer cough is cough variant asthma, which requires a bronchial excitation or diastolic test at the hospital. If the test result is positive, the diagnosis of cough variant asthma can be confirmed and long-term anti-asthma treatment is needed, such as chewing a chewable tablet of montelukast sodium at bedtime and also inhaling Cymbalta for treatment. Children under the age of ten who are unable to use Cymbalta can be treated with inhalation of budesonide and terbutaline using a nebulizer.