Hi,Dear,Thanks for your query to HCM. Dear I read your query and reviewed it with context to your query facts. I understood your health concerns and feel Concerned about them. Based on the facts of your query, your girl friend seem to suffer from- Rhuematic Heart Disease with?Mitral Stenosis(MS) with ? Mitral Regurge(MR) with Heart Failure with Breathlessness. She seems to have this unnoticed heart ailment,which needs to be evaluated with 2 D Echo and X-ray Chest, to confirm or rule out MS with MR after investigation. Other Causes of Exertional Dyspnea needs to be ruled out with Consults from Physician after full investigations and physical examination. Exertional Asthma is the most common cause of such breathlessness.RHD with MS with MR, though uncommon now a days due to better treatment.Other causes as- COPD / CCF / Lung Fibrosis(ILD)restrictive Dyspnea.X-ray of lung with FEV1 Pulmonary function tests, would fix the diagnosis, with help of Physician. Do Consult Pulmonologist / Physician or Cardiac Specialist. Hope this would help you to treat your health issues in the bes t way possible. Welcome for any further query in this regard. Good Day!! Dr.Savaskar M.N. Senior Surgical Specialist M.S.Genl-CVTS