Hello! Welcome and thank you for asking on HCM! Regarding your concern, I would explain that based on this clinical symptomatology, it is important to exclude a coronary artery disease or a lung disease. I recommend consulting with your GP for a careful physical examination, a resting ECG and a cardiac ultrasound, a chest x ray and some blood lab tests: - complete blood count - fasting glucose - blood gas analysis - thyroid hormone levels - cortisol plasma levels (adrenal gland function) - blood electrolytes, etc. A treadmill test and further tests may be needed if suspicions for coronary artery disease are raised. The respiratory tests may be needed to exclude a possible lung disorder. Hope to have been helpful! Best wishes, Dr. Iliri