NAS,

Welcome to this forum. I am sorry you found your way to us because of your pain, but as you read the posts here, you will find information that may help your condition. I am glad that get improvement from taking Vit D. that is a good indication that your PN might respond to supplements. PN has been my first major chronic condition, so this is my first online support group. It has been my life line ever since. As I developed other health conditions, this is the forum that i am comfortable and confident "going home to", so to speak.

Please continue posting, ask questions and most especially -- read.

Mary