Okay, so median nerve, probably.
I think that's on the opposite side of the elbow from the brachioradialis, but personally I'd still be inclined to start investigating there in case it's related, use your thumb or a massage tool or whatever to poke around all of the elbow and look for hot spots where it feels like there's a knot or spasm, roll out any tight areas.
It could be getting pinched somewhere else, but if you're getting elbow stuff then Occam's razor suggests that might be causing the nerve stuff too. And a bit of tissue work never hurts.
Edit - itís not something Iím
worried about really. Just interested to find out if itís something I can avoid. Not much worse than trying to crimp high up on a redpoint without being able to feel the hold properly!
Also it's always easier to get on top of stuff like this if you start early when it's just a little bit of occasional weirdness, rathen than waiting until it turns into a more persistent or serious problem.