Symptoms

Knee pain and swelling just below the kneecap are the main indicators of Osgood-Schlatter disease. Pain usually worsens during certain activities, such as running, kneeling and jumping, and eases with rest.

The condition usually occurs in just one knee, but it can affect both knees. The discomfort can last from weeks to months and can recur until your child stops growing.

When to see a doctor

Call your child's doctor if knee pain interferes with your child's ability to perform daily activities. Seek medical attention if the knee is swollen and red, or if the knee pain is associated with fever, locking or instability of the knee joint.