I am currently experencing these same symptoms of numbness and also pain. The patch of skin affected is just above my right knee and extends upwards along the lateral quad muscle. It is constantly numb and can be sensitve to touch. More often it feels as though the hair follicles have become hypersensitive to touch as even the brush of the bedsheets can be painful.
My doctor has called it Thigh Paresthesia and has prescribed Gabapentin (generic of neurotonin) which is prescribed widely to relieve neuropathic pain.
I'm not positive of the cause. I improperly lifted a heavy cooler on a recent camping trip although I have no real back pain to speak of; only some stiffness.
It could be possible that it's from biking, although I have not been riding all that much due to a recent move and the house projects that I've had to do. Meralgia Paresthetica is generally associated with obese or pregnant folks, of which I'm neither. I'll admit any day that I could stand to lose 10 or 15 pounds. Possibly, the bent over position of riding, over long distances, combined with my 10 pound spare tire, could simulate similar pressures caused by a larger belly. Is that theory sound? I'll have to ask my doctor.
My major fear is that it is soemthing worse: Multiple Sclerosis.
Has anyone had these types of syptoms and made a recovery?