Loss of consciousness is one of the most common symptoms of many heart problems, not only Brugada syndrome. Disturbances in the heart rate and the coordination of the cells that make it beat at a steady pace will affect your blood flow and, in most cases, make it insufficient. When your brain doesn’t get enough blood, it will shut down starting from the less needed functions in order to preserve the most important functions such as keeping your lungs breathing and your heart beating.
However, even if fainting is common to many heart conditions, the way you faint can tell the difference between syndromes and give your doctor a clue on which syndrome you might be actually having. Fainting from Brugada syndrome is often sudden and unexpected, which is called a “syncope”. It happens mostly at night or in the morning when you wake up, which is characteristic of this syndrome.