An arrhythmia may not cause any obvious symptoms. You may notice symptoms such as a slow or irregular heartbeat or notice pauses between heartbeats. You may also feel like your heart is skipping a beat, fluttering, pounding, or beating too hard or too fast. These are called heart palpitations.
Other symptoms of arrhythmias include:
- Chest pain or discomfort
- Difficulty breathing, or gasping during sleep
- Dizziness and fainting
- Tiredness or weakness
Keep track of when and how often you have symptoms, what you feel, what you were doing, and whether these things change over time. If your symptoms are very serious, such as difficulty breathing or chest pain, seek emergency medical care.