Hello. Thank you for asking at HCM. I went through your daughter s history. I would like to ask you a few more questions like - Does she have other allergies? Does she have wheezing after walking? Does she have chest pain, palpitation, excessive sweating, etc? However, from your given history, I would like to make following suggestions to your sister: 1. If she has other allergies or wheezing, asthma is very likely. In that case, I would prescribe her salbutamol inhaler on as-and-when-neede basis. I would also suggest her allergy testing so that she may identify the substances which are causing troubles to her and to avoid them. Regular breathing exercise will help her. 2. Were I treating her, I would suggest her to get her hemoglobin levels done. If they are low, they can cause breathing problem after heavy work/exercise. In that case, iron, folic acid, vitamin B12 and other nutrition supplements will be useful. 3. If any of above is not there, I would like to ask her symptoms in great detail to know whether she needs a cardiac evaluation. As she is young (29 years), anemia and asthma are more common possibilities rather than cardiac disease. However, it is important to diagnose the cause of her breathlessness. Hope above answer will be helpful to you. Should you have any further query, please feel free to ask at HCM. Wish you sister the best of the health. Thank you & Regards.