I have had Crohn's Disease for over 17 years, and I never noticed a patter of other symptoms occurring during a flare up until my most recent flare up which was the worst I had ever had. Even then, it took me a long time to connect the joint pain and severe fatigue together with my abdominal pain and diarrhea. I think my tendency is to compartmentalize each symptom and not link them.
If you can see a pattern of symptoms correlated together, and even better if you can see how one symptom often pre-dates the next, then you can really use your body as a guide. I want to try to learn to do this.
When my symptoms were at their worst, and I ultimately had bowel resection surgery all of the associated symptoms went away pretty quickly ( within days). But surgery is a very drastic was to get into "remission" I would imagine with medication it would be more gradual.
I hope you are feeling well,
Lisa