Symptoms

Although mitral valve prolapse is usually a lifelong disorder, many people with this condition never have symptoms. When diagnosed, people may be surprised to learn that they have a heart condition.

When signs and symptoms do occur, it may be because blood is leaking backward through the valve. Mitral valve prolapse symptoms can vary widely from one person to another. They tend to be mild and develop gradually. Symptoms may include:

• A racing or irregular heartbeat (arrhythmia)
• Dizziness or lightheadedness
• Difficulty breathing or shortness of breath, often during physical activity or when lying flat
• Fatigue

When to see a doctor

If you think you have any of the above symptoms, make an appointment with your doctor. Many other conditions cause the same symptoms as mitral valve prolapse, so only a visit to your doctor can determine the cause of your symptoms.

If you're having chest pain and you're unsure if it could be a heart attack, seek emergency medical care immediately.

If you've already been diagnosed with mitral valve prolapse, see your doctor if your symptoms worsen.