Symptoms may develop gradually and can vary depending on the severity of the condition.
• Shortness of breath, especially during activity or when lying down
• Fatigue and reduced exercise tolerance
• Chest pain or discomfort
• Palpitations or irregular heartbeat
• Dizziness or fainting spells
• Swelling of the feet, ankles, or legs
Some people may have no symptoms in the early stages and are diagnosed during a routine medical examination.