The vagus nerve’s connection to your heart may be involved in triggering people to faint
Your heart sends signals to your brain via the vagus nerve, and a disruption in these signals may be responsible for fainting
Autonomic dysfunction is common in patients with long COVID, including symptoms like dizziness and fainting, and it’s possible COVID-19 may influence signals passing through the vagus nerve
A disruption in blood flow of even a few seconds is all it takes to cause fainting or loss of consciousness
If you start to feel dizzy, lightheaded and clammy, and your vision gets blurry or filled with spots, sit or lie down immediately; this will reduce your chances of getting hurt by falling, and the horizontal position helps get blood flowing to your head
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