clonus

Clonus is a neurological condition characterized by involuntary, rhythmic muscle contractions and relaxations, typically seen in the legs or ankles. It occurs when the brain and nervous system lose some control over muscle function, often due to injury, disease, or conditions such as multiple sclerosis or spinal cord injuries. The most common way to observe clonus is by quickly stretching a muscle, which can cause it to repeatedly contract and relax. This response is a sign of an underlying issue in the body's nerve pathways and can indicate problems with motor control.