Medically reviewed by Brigid Dwyer, MD Key Takeaways Clonus causes involuntary, rhythmic muscle contractions when a muscle is stretched.It is often observed in conditions like multiple sclerosis, ...

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 ...

Poor sleep, difficulty moving and injuries from hitting something accidentally are just some of the challenges faced by suffers of often-painful involuntary muscle spasms. However, a new study ...

Muscle relaxers help reduce muscle stiffness and pain from conditions like cerebral palsy and lower back pain. There are two main types of muscle relaxers: antispastics and antispasmodics. Muscle ...