What is Vasovagal syncope?
it is also known as neurocardiogenic syncope. It causes sudden faintness due to low blood pressure or heart beat in case of emotional stress and sudden shock.

Symptoms
Skin color changes
Narrow vision, pupil dilated
Sweating – cold, clammy
pulse-slow
blurr vision

Prevention
Lie straight and elevate the legs
Sit down and put head between both knees to maintain the blood flow.