Hi . It is not unusual to experience numbness in the feet with MS, but the MS numbness doesn't usually come and go with certain activities. Your numbness might caused by MS, but it could also be due to an injury or damage that is irritating the nerve. I would talk to your neurologist about it, but you might also want to see an orthopedic doctor just in case. I hope you get some feedback from the community. Thinking of you! - Lori (Team Member)