eli5 , what’s vasovagal syncope?

Question

I cut my finger and bled (not too bad) and almost fainted, BUT I am not afraid of blood, is this a vasovagal syncope response?

In: 2

Answer 1

Syncope is a sudden loss of blood pressure, which often makes you pass out. The vagus nerve runs from your brain to your heart in order to slow the heart’s beating. So, a trigger in your brain sends a message down the vagus nerve to slow your heart, drop your blood pressure, and make you faint.