Brugada syndrome often doesn't cause any noticeable symptoms. Many people with Brugada syndrome don't know they have it. Signs and symptoms that may be associated with Brugada syndrome include: 
Dizziness
Fainting
Gasping and labored breathing, particularly at night
Irregular heartbeats or palpitations
Extremely fast and chaotic heartbeat
Seizures
 A major sign of Brugada syndrome is an irregular result on an electrocardiogram (ECG), a test that measures the electrical activity of the heart.