I am having a FM flareup. I have burning in my legs as well as skin sensitivity. My skin feels like it is sun burned. My doctor has given me Neurontin and it seems to be helping. This is the first time I have had this happen like this. I have had the burning skin feeling a little before but not like this. I am wondering how long this usually lasts. I know it is different for all but just wanted to know others experience. Also, if you take Neurontin (gabapentin) how much do you take and how often? Thanks for your input.