* Osteoarthritis
* Rheumatoid arthritis
* Injury
* Tendon problems
* Bursitis
* Gout
* Infection
* Referred pain from another area
That is why describing every joint symptom as “inflammation” can be misleading.
Persistent or unexplained pain deserves proper evaluation.
## When Should Knee Pain Be Checked?
Consider seeing a healthcare professional if you have:
* Persistent pain lasting several weeks
* Significant swelling
* A joint that repeatedly gives way
* Difficulty bearing weight
* Reduced range of motion
* Pain following an injury
* Increasing stiffness
Seek more urgent medical attention if a joint suddenly becomes extremely painful, red, hot, or swollen, especially if you also have fever.
## The Bottom Line
