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Cubital tunnel syndrome, also called ulnar nerve entrapment, happens when your ulnar nerve gets irritated or compressed (squeezed) at the inside of your elbow.

Nerves are bundles of string-like fibers that send and receive messages between your brain and your body via electrical and chemical changes in the cells. There are three main nerves in your arm: the median, the ulnar and the radial. The ulnar goes from your neck down your arm and to your hand.

You may have cubital tunnel syndrome if your ulnar nerve is compressed or irritated at the elbow. The nerve may also be affected higher on the arm or at the wrist.

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Running from your neck to your hand is a nerve called the ulnar. It helps you control muscles and feel sensations in your forearm, hand and fingers. Cubital tunnel syndrome happens when that nerve is irritated or compressed. A compressed ulnar can cause various uncomfortable and severe symptoms that, if left untreated, can lead to muscle weakness and atrophy.
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A healthy ulnar nerve is important for arm and hand use and sensation of your pinky and half of your ring finger. It helps you control muscles in your forearm and muscles in your hand. When that nerve is compressed or irritated, you might have symptoms including pain, numbness, tingling and the sensation that your extremity is falling asleep. See your healthcare provider if you experience these symptoms of cubital tunnel syndrome.

No one wants to be in pain all day. You don’t just have to put up with the symptoms of cubital tunnel syndrome. Treatment might improve your quality of life, and the sooner you get treatment, the sooner you’ll be in less pain.
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