Well, I had been 5 weeks pain free...then 2 days before christmas, I had this throbbing pain in the upper neck and the area where the block was done. I'm not sure if it is just nerve pain, only because it has never come on so quickly before, usually the block wears off gradually and the pain returns gradually...I think it is mostly muscle spasms in the neck! I still have this pain now, nearly 2 weeks later! Sitting here with my new laptop just makes it worse! lol Looks like it will be a trip to the Doctor soon...hopefully he's there next week!