Keeping your elbow straight is the main way to treat cubital tunnel syndrome. You may need to speak with an ergonomics expert or physical therapist to figure out ways to modify your daily activities if you have to keep your elbow bent normally. Your doctor may fit you with a brace or splint to keep your arm straight at night.

Non-steroidal anti-inflammatory medications may be taken. Steroid injections are not usually used since they can damage the nerve. 

You may be given physical therapy exercises to do.

If non-surgical treatments don't work, you may have surgery.