Symptoms develop gradually in those with aortic stenosis. A person may not develop symptoms for 10 to 20 years.

Initial symptoms of aortic stenosis include:

• Fainting:
• Occurs during exertion
• Difficulty breathing:
• During exertion

Symptoms of worsening aortic stenosis include:

• Chest pain
• Excessive sweating
• Breathing difficulty when lying flat
• Breathing difficulty that awakens you from sleep

Severe aortic stenosis may lead to congestive heart failure.

Additional symptoms of congestive heart failure include:

• Difficulty breathing at rest
• Palpitations
• Leg swelling (bilateral)