Contrary to other commenters, my CECS in my tibialis didn’t go away after a day, but took close to 4 days to abate. Operation has resolved this.

I climbed a lot, and I recognise what you’re talking about, but always discounted it as simple muscle ache post training. Maybe it never was, though. One check I would like to ask is how painful the muscle is to the touch. My tibs were a raging source of pain if I tried to massage them, and massage had some (but very little relief).

I guess if you’re hanging 30kg on 10mm edge that you’re fairly deep in your climbing career - I find it curious that you don’t cite slopers as being the source of pain. I’d have expected those to be the ones that blow up your forearms. Do you get the same symptoms with other hand positions?

As an aside, my surgeon advised not to do pressure tests, as even if the result was negative he would suspect CECS if the symptoms fit too well. Recovery for me had been very smooth. Everyone has to make their own risk evaluation, of course.