Small Fiber Neuropathy: What helps?

I have been diagnosed with Small Fiber Neuropathy. My problem is this. Since before they diagnosed me, I was having other symptoms that I thought were not related including loss of appetite/weight loss, bladder control, bowel control, problem with eyesight at times, tremors, sleep issues among some other things. I was told by my Neurologist that those things are not related to small fiber neuropathy but when I look it up, it says it can affect your autonomic nervous system. What is the truth. I am having a heck of a time with bladder and bowel issues as well as either sleeping through the alarm or not sleeping at all. I hope someone can shed some light on this for me. Thank you.