Hi NicoAVA - I do not have a lot to add from a medical/diagnostic perspective. I did just want to let you know that you are not alone as a person in their 20's. I am 23 and had my very first symptoms at 18 (these were actually mostly motor nerve related) and then my first consistent sensory symptoms at 21. My symptoms also seem to come in waves. I have long periods of relief, although feet burning has become something I feel most mornings, followed by longer periods of discomfort (anywhere from a week to 6 months). Doctors do not know what is causing this for me and essentially are fine with leaving it that way for now (which yes is very frustrating). Anyway, just wanted to say welcome and I hope it helps to know you are not alone