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