Clonus causes involuntary, rhythmic muscle contractions when a muscle is stretched. It is often observed in conditions like multiple sclerosis, stroke, and cerebral palsy. Clonus can be diagnosed by ...

Medically reviewed by Smita Patel, DO Key Takeaways Early signs of multiple sclerosis (MS) can include blurry vision, muscle weakness, dizziness, and fatigue.Clinically isolated syndrome (CIS) is ...