Clonus is an abnormal reflex response that involves involuntary and rhythmic muscle contractions. It typically occurs in response to a sudden stretch or stimulation of a muscle. Clonus is often seen as a series of rapid alternating contractions and relaxations, creating a rhythmic "jerking" movement. It is commonly associated with certain neurological conditions or brain damage.
It affects the nerve cells that control muscle movements. Damage to the nerves, as in clonus, causes the involuntary muscle contractions. It occurs most frequently muscles that control the ankles and knees and less commonly in the jaw, fingers, wrists, elbows, biceps, and calves.
Sometimes switching positions or applying pressure to the limb can stop the clonus. Medication, Botox injections and physical therapy are also options a doctor may suggest to help relieve clonus symptoms.
A Visual Example of Clonus
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