question: I have a question about my uncle. I don't have a lot of details though. He has a history of cardiac problems, including open heart surgery. He is on many cardiac meds for the last several years. Recently he has been experiencing episodes of dizziness where he just about blacks out. He has been to the ER 3 times in the past week and the doctors just keep saying its syncope. I am not convinced that there isn't something else wrong, perhaps related to his cardiac history. Any ideas on what may cause this? Also the other symptom he is having is blotchy, red skin. He is sweaty, and clammy.. and shivering. And extremely tired. BS was 119 non fasting.