Awww, running! I had just started training for a 10 mile race when I got my first debilitating MS symptoms. I’ve not run (properly) for 3 years now. Can manage about 50 yards before I start looking like an injured giraffe whose drunk too much. I’m grateful for those 50 yards though :).
I only received my dx 2 months ago, so I’m no expert by any stretch of the imagination.
I couldn’t work out how I had injured my hamstring, I also experienced muscle spasms, strange stinging sensations and random twitching in my legs at the time. I can confidently say that my leg pain/sensations were and are MS related and not due to an injury.
May be worth mentioning it to your MS nurse if it continues to be a problem