What is cubital tunnel syndrome? Cubital tunnel syndrome is a common condition caused by increased ulnar nerve (funny bone) pressure at the elbow. There is very little fat and subcutaneous tissue where the ulnar nerve crosses the elbow, indicating that the nerve is closer to the skin’s surface and more sensitive. A nerve subjected to repeated or direct trauma can become painful and sensitive to pressure or movement. As a result, if a person strikes their inner elbow, the sensation can be similar to an electric shock. If the nerve becomes swollen, it can impair the nerve’s ability to conduct impulses from the body to the brain and vice versa. You may experience altered or reduced sensation and decreased muscle strength if this occurs. It can cause discomfort, pain, and loss of hand function. Learn more about Physio Treatment For Cubital Tunnel Syndrome.