Aortic valve stenosis:
In this condition, the flaps (cusps) of the aortic valve may become thickened and stiff, or they may fuse together. This causes narrowing of the aortic valve opening. The narrowed valve isn't able to open fully, which reduces or blocks blood flow from your heart into your aorta and the rest of your body.
Aortic valve regurgitation:
In this condition, the aortic valve doesn't close properly, causing blood to flow backward into the left ventricle.
Your treatment depends on the type and severity of your aortic valve disease. In some cases you may need surgery to repair or replace the aortic valve.
Symptoms:
Some people with aortic valve disease may not experience symptoms for many years. Signs and symptoms of aortic valve disease may include:
Shortness of breath, particularly when you have been very active or when you lie down
Dizziness
Fainting
Chest pain or tightness
Swelling of the ankles and feet
Reference:
www.mayoclinic.com