I just started having this exact same sort of pain, about a month ago, that just surfaces now and then. Have you found out what it is? I'm 60 yrs old, 14 years since my last period, through with menopause, and can think of no relating factors to when this pain shoots through. No sign of blisters or any skin abnormalities. The pain is hard to describe, exactly. Thankfully, it's fleeting, though very intense.
I have it too... no idea what it is, but mine does not start in the thigh. Did you find out what it was?
Nope never had it. I would also guess that is a pinched nerve somewhere.
forgot to say it starts on the inside of my thigh first.