What Is The Cause For Nerve Pain After The Removal Of Cerebrospinal Fluid?

My sister had a very large kyst on her lower spine area. It was called a Tevlov kyst? I think. Anyway, they said it had cerebrospinal fluid in it and also nerve endings. She had it removed on feb 11th iat Sunnybrook in Toronto and came home on the 17th. Before she was hospitalized she was on Gabapentin 2200mg a day for the pain. At home now, she s got lots of pain that she didn t have before as well as some numbness. She says she can t feel the sensation to go to have a bowel movement. Also, she has electric shock pain and she says her thighs feel like they ae on fire. I thought this might all be associated with the fact that the doctor had worked so close ly with the nerves that they are now furious and are reacting. My sister wondered if the gabapentin that was used for pain before would still be useful after the surgery. Also, how long can this nerve pain last. Is it probable that the pain will diminish with time and with the use of gabapentin. MJ