I woke up on Tuesday with pins and needles on the underside of my left arm / pinky / ring finger - thought I'd just slept on it funny, but it persisted throughout the day and kept going through Wednesday.
Seems to have gone now though - but my RIGHT hand now has pins and needles in it! More my palm / the same fingers + my thumb...
I'm no hypochondriac, but I'm gonna go and get this checked out. I'm worried about CTS / RSI - and as I'm a programmer and a bassist, I use my hands / wrists a HELL of a lot!
The only thing I can link this to is that I went to see a Bon Jovi gig on Sunday - was stood up in a crowd for about 6 hours + about 3 hours of walking before that... I was in utter agony (feet, lower back, legs, knees) - I'm hoping it's just a trapped nerve from that! I've not been typing / playing bass any more than usual (in fact, I've been playing bass a lot LESS as we've been having some band problems recently).
The only other thing is that I'm trying to change my left hand technique whilst playing at the moment - after being given some good advice on here about it

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Hind-D R: Ampeg SVT-4 PRO, 810HPC
B: Yamaha TRB6JP2, Ibanez BTB 556MP, Fender Deluxe Jazz
E: EBS MultiComp, Boss MT2, Line6 Echo Park
Clubs
Yamaha #158 | Fender Jazz #115 | Ampeg #379