In MS, curling of fingers and toes (claw hand/foot) happens due to the condition's effects on nerves and muscles. This can be caused by two types of spasticity:
• Flexor spasticity - tight muscles keep joints bent and hard to straighten
• Extensor spasticity - tight muscles keep joints straight and hard to bend
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In MS, curling of fingers and toes (claw hand/foot) happens due to the condition's effects on nerves and muscles. This can be caused by two types of spasticity:
• Flexor spasticity - tight muscles keep joints bent and hard to straighten
• Extensor spasticity - tight muscles keep joints straight and hard to bend
Common triggers that can worsen spasticity include:
• Sudden movements
• Temperature/humidity changes
• Infections
• Tight clothing
• Stress Between 40-80% of people with MS experience muscle spasms that can cause curling. These involuntary contractions may be brief or prolonged. If left untreated, spasticity can lead to joint contractures where muscles and ligaments harden, limiting range of motion. This is why it's important to work with your healthcare team to manage symptoms early through treatments like physical therapy, stretching exercises, or medications like baclofen or tizanidine when needed.
September 9, 2025
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