Why does my elbow hurt when I extend and bend it?

Pain when bending or straightening your elbow is most often caused by tendinopathy (irritated tendons) or nerve entrapment (compressed nerves). These conditions typically develop from repetitive motion, overuse, or sustained strain on the joint.

Common causes of elbow pain with movement include:

• Tennis elbow or golfer's elbow (tendinopathy)
• Cubital or radial tunnel syndrome (nerve entrapment)
• Bursitis or joint inflammation
• Ligament sprains from overuse

Because tendon and nerve issues can look and feel similar—but require different treatments—identifying the likely cause early matters. Left unchecked, mild irritation can progress into chronic pain or reduced range of motion.

The fastest way to understand what's driving your symptoms is to take a free, instant, online symptom check. In just a few minutes, you'll get personalized insights into possible causes and clear guidance on the right next steps—whether that's home care, seeing a primary care doctor, or consulting an orthopedic specialist. It's private, physician-developed, and takes less time than scrolling your feed.

Reviewed for medical accuracy: 07/15/2026