Hello! Thank you for the question on HCM! I understand your concern. In my opinion the problems you have may be related to fatigue and a kind of lack of energy. I would recommend a full blood work to rule out anemia , as it can cause similar symptoms. A good nutrition , full of vegetables and vitamins would be very helpful for your body and your brain. And don t forget to drink a lot of water . It is very important for the micro-circulation inside your brain, which help to raise the resistance. If these advises don t change your situation , a consult with the ophthalmologist would be necessary to exclude vision problems. Sometimes under diagnosed vision problems can cause chronic headache. Hope to have been of help! Greetings, Dr. Abaz QUka