Hi, Welcome to HCM! Thanks for posting your query. I am happy to address your questions. Chronic cough is a cough that persists. Some common causes of chronic cough include asthma, allergic rhinitis, sinus problems (for example sinus infection), and esophageal reflux of stomach contents. Infections such as bronchitis or pneumonia can cause acute cough or a chronic cough. These infections can be caused by viruses, bacteria, or fungus. Viral infections do not respond to antibiotics. In patients with asthma, viral upper respiratory infections often result in a protracted cough even after the infection has cleared. Just prescribing antibiotics could also cause resistance to the infection, will suggest you get her examined with a pulmonologist to come to a definitive diagnosis who may request some more investigations like blood and sputum tests. It could be due to her continuous cough that she maybe getting fatigue. Hope I have answered your query. If you have any further questions, I will be happy to help. Thanks