The chances of a complete remission are very rare. I'm not talking about the "I hardly notice them anymore" or "mine are much less now" but a complete and utterly resolved case. Having said that, I have been made aware that it is possible for all symptoms to vanish entirely. but it is a rare occurrence and no explanation can be offered as to why, therefore I wouldn't go holding your breath.
It's always been my view that this is a life long condition, at least for me it is and after 12 years I've not been proved wrong. Some might interpret this as negative thinking, but not as far as I'm concerned. I learnt early on to accept this as part of my life so therefore it warrants no thought on my part..