What Are Some Medical Causes for Vasovagal Syncope?


Quick Answer

The immediate medical cause of vasovagal syncope is a sudden drop in blood pressure brought on by a surprising or emotionally distressing situation, explains the Mayo Clinic. The body's heart rate and blood pressure drop, reducing blood flow to the brain. This results in a temporary loss of consciousness.

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Full Answer

Vasovagal syncope is the most common cause of fainting and is benign, according to the American Heart Association. There are other medical causes of syncope, or fainting, such as abnormal heart rhythms and dehydration. It can also occur as a side effect of some medicines. However, vasovagal syncope refers specifically to the benign and temporary fainting spells triggered by the nervous system in response to emotional distress.

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