Hello ! Thank you for your question on HCM! I understand your concern. In my opinion your symptoms may be caused by anxiety, but there are also some other conditions like a hyperthyroidism, an infectious disease, an autonomic disorder that cause similar symptoms. I would like to know if you have been taking any drug or substance, as withdrawal symptoms from different drugs can cause similar symptoms too. I would recommend you to consult with your GP, have a good physical examination , measure your blood pressure in sitting and standing up position , your heart rate , a full blood work for inflammation and thyroid function tests . If the above tests result normal, I would recommend benzodiazepines for some days. Hope to have been helpful! Best wishes! Dr. Abaz Quka