The investigators are doing this study to see if a treatment called dry needling improves muscle spasticity (muscle tightness) in people who have Multiple Sclerosis. Dry needling involves using tiny needles, like those in acupuncture, to target some muscles, like calf muscles. It differs from traditional acupuncture as it focuses on treating or managing muscle spots, aiming to reduce muscle stiffness and pain. Dry needling may offer a minimally-invasive and medication-free approach to improve muscle spasticity. The investigators hope to see if dry needling also helps enhance balance and walking abilities. This might provide potential improvements inoverall mobility and balance.