Flares are certainty with an UC (not a matter of "if" but rather of "when"), and in fact it's even part of the definition (a chronic illness with periods of remissions and flares...). What we can do is make our flares as infrequent and as mild as is all humanly possible, by staying on an appropriate treatment plan both when feeling well and unwell.
Disease progression can happen, even when we're following our maintenance treatment religiously. It's our UC spreading in extent or severity, we have a small percentage of under-treatment that builds up inflammation over time until the frigg'n floor falls out from underneath us and we're in a full flare. Progression is generally limited to the first 5-years of UC.
Our UC can just fit/tantrum for no reason at all that we can trace. Yeah, call it the randomness of UC, or how truly poorly we understand the underlying mechanisms of it all. These are usually very mild flares that are easily tamed by temporarily upping our maintenance meds (going from 2,400 maintenance dose to 4,800 flare dosage of 5ASA/mesalamine and adding daily enemas). When you're well maintained these are but a mild and infrequent inconvenience.
Post Edited (iPoop) : 7/10/2018 7:37:35 AM (GMT-6)