India, Aug. 26 -- Some people love surprises, but for another group, it is often too much to handle. Anything sudden, joy, fear, pain, or even something like the sight of blood, makes them dizzy and lightheaded, and can even make them faint on occasion.

While that may seem to be dramatic for others, according to physician Dr Kunal Sood, there is good reason for the effect. Taking to Instagram on August 25, he explained why some people faint after receiving a surprise, and what steps can be taken to prevent it.

The phenomenon of feeling dizzy or passing out after being shocked or surprised is called vasovagal syncope, and, according to Dr Kunal Sood, it is the most common cause of fainting. It is caused by certain triggers to the nervous...