DR RV ANAND CONSULTANT NEUROLOGIST SAI NEURO CLINIC MANDAVELI AND MYLAPORE SYNCOPE SYNCOPE is the medical term used for fainting.it happens when the brain temporarily doesn't fet enough blood.one of the most common reason is vasovagal syncope.it can happen when you have stress from fear or pain stand for too long or over tired while urinating or coughing some times no clear cause can be identified