A
vagal episode or
vasovagal response or
vasovagal attack (also called
neurocardiogenic syncope) is a
malaise mediated by the
vagus nerve. When it leads to
fainting, also known as a "syncope", it is called a
vasovagal syncope, which is the most common type of fainting. Vasovagal syncope is most commonly found in adolescents and in younger adults.