What is klonus?

Klonus is a neurological condition characterized by rhythmic, repetitive involuntary contractions or spasms of a muscle or group of muscles. It usually occurs in response to sudden movement or stretching of the muscle. Klonus is most commonly seen in the ankle or knee joint, but it can also affect the wrist, elbow, neck or other parts of the body.

Klonus can be caused by various neurological disorders such as multiple sclerosis, stroke, traumatic brain injury or spinal cord injury. It may also be a symptom of certain metabolic or genetic disorders.

The diagnosis of klonus is usually made through physical examination and a detailed medical history. Treatment options for klonus include medications such as muscle relaxants, antispasmodics and anti-seizure drugs. Physical therapy and exercise can also help in reducing symptoms of klonus. In severe cases, surgery may be necessary to control the muscle spasms.