Hello Doctor, My daughter, Nyra, 4 years old, has been having repeated cough and cold for the past few weeks. We recently did an X-ray and blood tests. The reports showed mucus or phlegm in the lungs, and she was given medications including antibiotic (Cefpodoxime Proxetil), Levo-cetirizine with Montelukast, Acebrophylline syrup, and Prednisolone. After 5 days of medication, her condition improved and the cough reduced. However, after about a week, the cough and cold are coming back again. She also gets nasal congestion at night and sometimes chest sounds while coughing. Kindly advise if this could be allergic bronchitis or a recurring infection, and whether we should start any long-term treatment or preventive care to stop it from coming back. Please also suggest if we need to repeat any X-ray, nebulization, or blood tests at this stage. Thank you, Doctor