<human>: When standing for a long period of time I start to feel sluggish, get blur vision, get really hot inside my body,and I begin to get the fainting feeling. When I get like this I check my blood pressure and also my blood sugar and there levels are normal. What could it be if it is not my diabetes or blood pressure.....
<bot>: Hello! Thank you for asking on Chat Doctor! Your symptoms seem to be caused by orthostatic hypotension. For this reason, I would recommend you to perform a Head Up tilt test coupled with some other blood lab tests: - complete blood count for anemia-thyroid hormone levels for thyroid dysfunction- blood electrolytes. Meanwhile, I recommend avoiding prolonged standing up position and take plenty of fluids. Hope to have been helpful! Wishing all the best, 