1 doctor weighed in:

When i get choked or cough i get very light headed and everything goes bright.. What could this be?

1 doctor weighed in
Dr. Michael Rothman
Internal Medicine

In brief: Vasovagal response

Your autonomic nervous system (ANS) controls virtually all the organs and systems in your body.
When you cough, your blood pressure goes very high & activates part of the ans, your vagus nerve to lower your bp. This is known as the vaso vagal response. The vaso-vagal response is caused by excess pns tone which will lower pulse and BP at the same time. The low BP makes you feel dizzy.

In brief: Vasovagal response

Your autonomic nervous system (ANS) controls virtually all the organs and systems in your body.
When you cough, your blood pressure goes very high & activates part of the ans, your vagus nerve to lower your bp. This is known as the vaso vagal response. The vaso-vagal response is caused by excess pns tone which will lower pulse and BP at the same time. The low BP makes you feel dizzy.
Dr. Michael Rothman
Dr. Michael Rothman
Thank
Get help from a real doctor now
Dr. Bennett Machanic
Board Certified, Neurology
50 years in practice
56M people helped
Continue
111,000 doctors available