Definition: Saddlesick, also known as a saddle-biting or saddle-shivering disorder, is a condition that affects the muscles and nerves of the lower back. It can cause severe pain, particularly in the area around the spine and neck, and may lead to difficulty sleeping and increased discomfort during physical activities such as walking, running, and lifting heavy objects. Saddlesick is often described as a "nightmare" or "nightmare-like" condition because of its sudden onset and lack of