Knee pain | Symptom Checker
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What causes knee pain? 27 possible conditions

See a list of possible causes in order from the most common to the least.

21

Osgood-Schlatter Disease

Osgood-Schlatter disease is a condition connected to growth spurts. It specifically affects the knee, resulting in a painful lump. This condition typically occurs in growing adolescents, especially boys ages 10 to 15.

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22

Juvenile Rheumatoid Arthritis

Juvenile rheumatoid arthritis is a form of chronic arthritis that affects children. It is a long-term autoimmune condition characterized by stiffness and swelling in the joints. Most cases of JRA are mild.

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23

Reactive Arthritis (Reiter's Syndrome)

Reiter's syndrome produces inflammation, swelling, and pain in the joints due to infection elsewhere in the body. Symptoms include mouth ulcers, painful urination, and urethral discharge.

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24

Chondromalacia

Chondromalacia, also known as "runner's knee," is a condition where the cartilage on the undersurface of the patella (kneecap) deteriorates and softens.

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25

Rheumatic Fever

Rheumatic fever is a complication of strep throat. If it's left untreated, it can cause permanent damage to your heart. Find out about symptoms and treatment.

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26

Kawasaki Disease

Kawasaki disease is a rare but serious illness that causes heart problems in children. It is a form of a condition called vasculitis (inflammation of the blood vessels). The blood vessels include arteries, veins, an...

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27

Legg-Calve-Perthes' Disease

Juvenile osteochondrosis affecting the head of the femur is also known as Legg-Calve-Perthes disease. In this condition, blood supply to the ball of the femur is cut off and the bone dies. It primarily affects youn...

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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