OK, for starters O H
I was on Avonex for over 3 years but ended up not being able to tolerate it anymore. Has your mom had the test for NAB's (neutralizing antibodies)? That is something she may need to have done if she hasn't already being on interferon for that long. If she's been stable for ten years, keep her on the avonex for sure. But if she thinks she's starting to progress, she could always change to Copaxone or even Tysabri, although Tysabri isn't recommended unless you DON'T respond to other treatments. Copaxone is the only mainstream MS drug that isn't an interferon like Avonex. Betaseron, Rebif and Avonex are, but Copaxone is not.
Is it just starting to bother he a little, or is the tingling intense? Not that I'm going to give any diagnosis, but if it's intense and not just a little flicker, she may want to get in to see her neuro. asap. The rule of thumb I use is that if it's brand new, or gotten markedly worse and stays for 4 whole days, then it's new activity and she should see her Doc.
Other than that, welcome! What part of the buckeye state are you from? Dayton here, originally from Columbus.