Web MD reports that radial tunnel syndrome is a painful condition caused by pressure on the radial nerve. This is one of the three main nerves in your arm. It runs from the upper part of your arm down to your hand and provides feeling and movement to your arm and hand.

"In severe cases, patients can begin to experience weakness in the muscles of the forearm, as the nerve responsible for radial tunnel syndrome is damaged from chronic or severe compression," says Carl M. Cirino, MD, sports medicine surgeon at HSS. 

It's important to get the right diagnosis. Sometimes, people who are misdiagnosed with tennis elbow get a counterforce brace or tennis elbow strap that puts pressure on their forearm. "This is exactly the opposite of what we want for a patient with radial tunnel syndrome," says Dr. Cirino. This type of brace could worsen your symptoms.

Read the full article at webmd.com.