I was diagnosed at Cleveland Clinic in 1986 with IHHS or now they call it hypertrophic cardiomyopathy. I do not have any blockage. I have followed-up with local cardiologist throughout the years (I live in southern Ohio). I've been fairly asymptomatic. My father and my brother had the same diagnosis and died suddenly (30 & 40 years ago). Lately, I've had erratic heartbeats, some angina and feel a little lightheaded (no fainting). I contributed it to stress. However, I saw a new cardiologist and she is running some tests and suggested I may be a candidate for an ICD. I was shocked. My other cardiologist has never mentioned it after 10 years of visits. I am 53 years old, going through menopause and a diabetic (but sugars are under control). Do I really need a defibrillator? I feel great most of the time.