Thanks for your question.
Your question about causes of neuropathy is very interesting. Neuropathy is a resultant of many reasons. You have fibromyalgia which causes localized and generalized pain and burning sensation in feet. The medicines you are taking now are really effective in treating these symptoms. But I would like to suggest you to meet your doctor and get a full physical test including all lab studies. This can help in ruling out any other health issues which may be present. Pain management is also given concern because chronic pain is connected closely with depression. Suffering chronic pains can induce depression and can it is advised to get screened for depression. Treating according to the symptoms are the most advised and effective course for this. Have a healthy living.