im going through say thing cold index finger i am an electrician .i went to doc he is not sure he says poisibly raynauds.he gave me some blood presure meds doesnt help ,had xray and blood work,no answers,next is spinal xray. the more i look in to this im thinking,it may be carpal tunnel.i work out side alot so this problem is a large issue,gloves dont help much.i also use alot of hand tools, cordless drills etc.this is a good posting at least i know im not the only 1. good luck keep posting as will i.