I've been occasionally feeling sharp, split-second 'twinges' of discomfort or pain in my right leg. Initially it was just one small area of the medial hamstring a few inches above the knee, but now I feel it also in the upper calf a few inches below the knee as well as a more lateral area of the hamstring. The first twinge is usually just a little odd-feeling, but they get progressively more painful if they reoccur during the same ride. No residual pain, bruising, apparent effect on muscle strength or flexibility... but in the interest of not making this any worse I typically turn around and slow-pedal home once I feel it come on.

It's been going on for about a year now and has put me off racing or serious training for fear of making it worse. When it happens, it's usually 45 minutes or an hour into a ride at a tempo-ish pace but I've felt it both on shorter and easier rides. I used to experience them a couple times per month whereas now it may be every other month, but my ride intensity has also gone way down.

I began seeing a sports medicine doctor for this about a month after it began (it's being treated as a form of muscle sprain), but so far it has resisted the prescribed physical therapy of hamstring exercises and stretching. I also saw an out-of-network specialist with a chiro background who thought it might be fascia-related and recommended regular trigger point therapy, which I didn't pursue due to cost concerns.

Curious to hear if there have been others with similar symptoms, and whether they were able to be successfully resolved. I'm still fairly young so was hoping this would resolve itself as most of my past injuries have, but this one has continued to linger.