What causes sudden blackout, nausea and excessive sweating?
Hello. Thank you for your question and welcome to Health Care Magic. I understand your concern.
First, let me reassure you, because this is a phenomenon that happens to a lot of healthy young people and it can come from dehydration and from a sudden loss of blood, especially in menstruating female population. It is called orthostatic hypotension and is caused by a sudden drop in blood pressure when the position of the body is suddenly and quickly changed and the fluids redistributed. There is only one thing that is advisable to do. I recommend you to not stand up quickly, but slowly and easily switching positions. For example, going from lying down position to sitting up position and standing like that for one minute, then slowly standing up. I am confident that this will solve the problem. As every other thing in the world, blood in the organism is also prone to be "faithful" to the gravity law, and most of the blood goes to the lower limbs when we quickly switch positions and, for brief moments, brain does not get enough supply and the temporary "blackout" occurs.
I hope I was helpful with my answer. I am happy to help, if you have follow-up question. Please rate the answer, if you do not. Wish you a good health.
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