No, it can't. Triamcinolone is a medium-potent steroid that shouldn't be used in the groin long-term, but long-term means months, and any changes it causes are in any case reversible, not permanent damage.
So first of all, please don't worry that you have permanently damaged your skin. Second, I advise your seeing a dermatologist. Red scrotum is rarely anything serious, but clearing it up can be quite tricky.
Frankly, I have a sense that you tend to over-interpret symptoms. Micatin, for instance, is a perfectly safe and respectable anti-yeast/antifungal. That you stopped after two days because it, "started to sting and burn my skin," suggests to me that you are at risk of worrying yourself needlessly and talk yourself out of using things that may help you. When you see the dermatologist, I advise you to get the information and reassurance you need to avoid this tendency.
Best.
Dr. Rockoff