<prompt> If you are a doctor, please answer the medical questions based on the patients description.hello ...my mother in law is diabetic and from last 4 months she is suffering from chronic cough , hypoxia , pain in chest , her medical test are all normal ...she is n Amaryl ...last night she again had a hypoxic attack ...what should be the diagnosis ...please let me know  <response>: Hello! Welcome on Chat Doctor! I carefully read your question and would explain that her symptoms seem to be related to a lung dysfunction. Coronary artery disease can not be excluded either, considering the fact that she is a diabetic. Coming to this point, I would recommend consulting with her attending doctor for a careful physical check up and some tests: - a resting ECG- a chest X-ray study and respiratory function tests- a cardiac stress tests should discuss with her doctor on the above issues. Hope you will find this answer helpful! Best wishes, 