Thanks cfidl. Yes anangel it can happen as you say and also from a grass cut a sprained ankle . It is when the sympathetic nervous system goes crazy. You may have a minor injury but you feel like you literally had your appendage ran over bv a train. I have had it in it's worse form over several years I finally got enough movement and strength back to be able to sew. I lost my job that I loved and lots more. I pray that no one has to go through it. Right now mine was cause by a mild illness (pain wise) that put me in the hospital overnight. I am doing better and hope to be sewing in a few days.