For the past several years I've had long periods (upwards of 6 months at a time) of excruciating burning/tearing pain in various tendons or ligaments when stretched.
The first occurrence was in my right knee. If I bent my knee near its maximum extent (such as when kneeling, crouching or climbing into bed), I experienced an incredibly painful tearing/burning sensation in the area of my patellar tendon. I would immediately react and straighten my knee and the pain would completely dissipate within several minutes. Afterward the area would feel about 50% numb, as if injected with a mild local anesthetic that was slowly wearing off, for several hours. I mentioned this to my doctor and he just dismissed it as "you probably just strained your knee", but I hadn't. Normal walking, running, jumping, etc caused no pain, weakness or instability and there was no swelling, bruising or other external indication of injury. It was only while fully bent that the pain occurred. This episode lasted for at least 6 months. Then, as quickly and mysteriously as it appeared, it was gone.
Some months later, I went to step up on a curb and I experienced the same tearing pain in my right Achilles tendon when I bent my foot upward near its max extent. Just as with the knee, the pain subsided within a few minutes and a numbness was left behind. This lasted several months as well, then suddenly disappeared.
Next, the same happened in my right knee again, although this time it was in my Lateral Collateral ligament area. This lasted for several months as well. During this particular episode the numbness that followed the pain never completely subsided, though. When the episode was over, I was left with a persisting slight numbness and slight pain sensitivity to external pressure (sensitive to the touch).
About a month ago my fourth episode began and continues today. This time it's along the outside of my right big toe and occurs when I extend my foot downward and point my toes, such as when putting on a pair of pants. Like the last episode, the numbness is not subsiding after a pain attack.
Overall the pain is short-lived when I forget myself and accidentally induce it. It's more of a nuisance than anything, but at the same time it's troubling to think that there could be an underlying reason which may be serious.
So I'd like to know if anyone else has experienced this and has a name to put on it so I can either put my mind at rest or get treatment without having to battle the usual "oh, you probably strained it, take some ibuprofen and see what happens" from my doc.
Thanks!!