How does 4-year-old child cough badly to do

4-year-old child cough severe, to take the child to the hospital in time for a blood routine, sputum culture and other examinations, if it is caused by mycoplasma infection, oral azithromycin dry suspension and cough syrup and other drug treatment, if the condition is more serious, it is best to go to the hospital for aerosol inhalation treatment.