Been told that I have thickening of heart walls. I have had some of the symptoms, but Dr. says it is mild and no big deal! Why would I have come to the Dr. with unanswered fainting spells, chest pain, fatigue, weakness, headaches, etc. I have had controlled blood pressure for 3 years now, Diabetes within the last six months! I understand that this can be sometimes genetic. Should I have my children checked? Is this a dangerous condition?