MyMSTeam

Great question — and the short answer is: both, but it starts with neurology.

MS is a neurological condition where the immune system attacks the central nervous system (the brain and spinal cord). It damages the protective coating around nerve fibers (called myelin), which disrupts the signals traveling between your brain Show Full Answer

Great question — and the short answer is: both, but it starts with neurology.

MS is a neurological condition where the immune system attacks the central nervous system (the brain and spinal cord). It damages the protective coating around nerve fibers (called myelin), which disrupts the signals traveling between your brain and the rest of your body. This nerve damage leads to very real physical effects in the legs, including:

- Weakness — muscles don't receive proper signals, causing them to feel heavy, like jelly, or give way
- Pain — nerve damage creates sensations like burning, stabbing, or squeezing
- Spasms and spasticity — muscles stiffen or twitch involuntarily
- Numbness and tingling — damaged nerves send random signals the brain misreads as physical sensations
- Walking difficulties — over 75% of people with MS experience some walking impairment So while the *root cause* is neurological, the *experience* is very physical. One MyMSTeam member described it as feeling like "something jumping inside my leg."

Muscle atrophy can also develop over time if mobility becomes limited, adding a more purely physical layer to the dysfunction. It's worth discussing any leg symptoms with your neurologist, as there are treatment options that may help.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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