Sometimes
no
your index finger! LOLX
Called 'trigger; finger. Surgery is one way ........and it might just go away.
of course you can't dombass
Not really it all depends on where it's at
yes
noit doesn't hurt
yeah it depends of where and which finger you do it on.
You prolably dont hurt it is the finger and it hurts when you touch it.
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Well, they say that popping your fingers can cause arthritis later on, so I'm assuming it's the same with your toes since you're popping it in the same way and the structure is similar.
A hurt finger doesn't stop you from working out. It may prevent you from making a proper fist. Let your instructor know what the limitation is and they will work with you.