 [ Symptoms ] when i dont eat for more than 3 hours i shake get hot flashes and pass out my sugar levels are normal when checked uptaking sugar when this happens was my doctors advice but it does not always help if i do not eat within ten minutes of this shaking and hot flashing then i pass out for over an hour my blood pressure is lower and so is my pulse my daily resting rate is 10471 and hr of 58 65 neither of which my physician was concerned with my temperature runs in the normal from 96 97 f shaking intensifies if i use my muscles when resting i fell no shaking only if i move  why [ Disease ] most helpful answer so sorry you are going through this it sounds scary even if your blood sugar levels tested normal during a routine lab test that does not mean you are not having episodes of hypoglycemia when you say my sugar levels are normal when checked  i am assuming you are talking about a lab test have you ever used a hand held glucometer to have someone check your sugar level when you experience one of these shakingsweatingpassing out episodes the reason your doctor specifically said to eat something sugary when this happens is to rapidly raise your low blood sugar levels it is not enough to eat just anything when these episodes occur carry a candy bar or something very sugary with you to eat when you start to feel these symptoms coming on passing out for over an hour can indicate dangerously low blood sugar levels you should not allow that to continue if you experience an episode like this again and your friends cannot rouse you wake you up they need to call 911 immediately i would strongly recommend going back to the doctor to have your symptoms reevaluated if eating sugar is not helping when you have one of these episodes by the way your blood pressure and pulse numbers look very good which is why your doctor was not concerned i hope this helps