question-icon

What causes sudden blackout, nausea and excessive sweating?

default
Posted on Sat, 5 Dec 2015
Question: Hello. This morning I found that everytime I stand, I begin (within seconds) to blackout, get extremely nauseous and sweat. Then when I lay down, the symptoms go away almost immediately
doctor
Answered by Dr. Meriton Siqeca (17 minutes later)
Brief Answer:
Orthostatic hypotension

Detailed Answer:
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.

Best regards,
Dr. Meriton
Above answer was peer-reviewed by : Dr. Vinay Bhardwaj
doctor
Answered by
Dr.
Dr. Meriton Siqeca

Cardiologist

Practicing since :2009

Answered : 773 Questions

premium_optimized

The User accepted the expert's answer

Share on
What causes sudden blackout, nausea and excessive sweating?

Brief Answer: Orthostatic hypotension Detailed Answer: 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. Best regards, Dr. Meriton