Hello! Thank you for the question on HCM! I appreciate your concern! It seems to be migraine. But from your description I would not exclude other probable causes like a brain lesion, a tumor etc. I would recommend you to consult with your GP and have a physical examination and a routine blood test for anemia and inflammation. If all tests are normal it is probably migraine. An antidepressant like amytriptiline or an antiepileptic drug like topamax would be very helpful to reduce the frequency and severity of migraine attacks. Hope to have been of help! Greetings! Dr. Aida