What might cause pain in the right kneecap?

There are several reasons why you might feel pain in your right kneecap. One common cause is chondromalacia patella, which means the cartilage under the kneecap has softened or worn down. This can make the kneecap feel sore when you move your leg, especially during activities like climbing stairs or sitting for a long time. Another possibility is knee osteoarthritis, where the joint wears down over time. This can lead to pain, stiffness, and swelling in the knee. Sometimes, an injury or overuse during sports or exercise can strain the tendons and muscles around the kneecap, causing pain. Misalignment, where the kneecap does not track properly over the knee joint, is another reason that can bring discomfort. Each of these conditions affects the knee in a different way, so the type and timing of the pain might help point to the exact cause. To better understand what might be causing your symptoms, try our free AI symptom checker for personalized insights, or consult with a healthcare provider for a proper evaluation, which can include a physical examination and imaging tests.