The most common sign of Wolff-Parkinson-White (WPW) syndrome is a heart rate greater than 100 beats a minute. Episodes of a fast heart rate (tachycardia) can begin suddenly and may last a few seconds or several hours. Episodes can occur during exercise or while at rest. Other signs and symptoms of WPW syndrome are related to the fast heart rate and underlying heart rhythm problem (arrhythmia). The most common arrhythmia seen with WPW syndrome is supraventricular tachycardia. Supraventricular tachycardia causes episodes of a fast, pounding heartbeat that begin and end abruptly. Some people with WPW syndrome also have a fast and chaotic heart rhythm problem called atrial fibrillation. WPW WPW WPW In general, signs and symptoms that may occur in people with WPW syndrome include: WPW 
A rapid, fluttering or pounding heartbeat (palpitations)
Chest pain
Difficulty breathing
Dizziness or lightheadedness
Fainting
Fatigue
Shortness of breath
Anxiety
 Symptoms in infants Signs and symptoms of WPW syndrome in infants can include: WPW 
Pale or faded skin color (pallor)
Blue or gray coloring to the skin, lips and nails (cyanosis)
Restlessness or irritability
Rapid breathing
Poor eating
 Some people with an extra electrical pathway don't have signs or symptoms of a fast heartbeat. This condition is called Wolff-Parkinson-White (WPW) pattern. It's often discovered by chance during a heart test.