Many of us (most?) are high achievers or at least have high goals for ourselves and our lives, so it hurts our sense of self-image to be un-normal. I don't want the pharmacy tech to blare out what my condition is, that's my business.
I'm not ashamed of having UC but I also don't want everyone in the world to know it, in the same way I don't want them to know my bank balance or my exact age
I agree that your therapist does not understand the emotional difference between physio and UC, not a good sign.
Not to make less of our condition since I know the depths of UC well but I read a biography of Lauren Hillenbrand who wrote "Seabiscuit". She has chronic fatigue syndrome, some days unable to rise from bed and days she cannot leave home or even go downstairs, and there is no operation to make that better.
And of course we can be grateful we don't have inoperable cancer. We have UC with it's myriad unpleasant life-altering symptoms. I think the worst thing is it's hard to get sympathy for it from people who don't have it because it's not "nice". They cannot imagine that an adult cannot control their bowels. And it is not discussed in polite company.
We are not alone. We have HealingWell friends who know what our life is like, really know. For this I am grateful.