Welcome to the forum! :bigwave:
I just wanted to stop by & welcome you. Like David said, the exact cause of this condition is not known. :yfrown: There are risk factors such as genetics but most researchers seem to think that everyone has a different trigger that causes this disease. This is why finding a cure, or even a good treatment is hard to find. I suspect that in the future, their will be multiple 'cures'. Each person who's diseased was set off by something in particular, will probably have a cure to their individual disease. Again, this is all theory.
There are a lot of treatment options out there as well as clinical trials for those who have not been able to remain in remission for long periods of time. That is something to look into if you've failed the other medications.
Take care!