Sorry if I offend you, but I beg to differ with you, Dr. Rokoff.
Steroids can cause genital skin atrophy. There are many mentions of this online. Several doctors strongly discourage the use of steroids in the genital area because they are dangerous and not necessary. There are safer options.
I learned this the hard way. I used Clotrimazole/Betamethasone Dipropionate for only 2 weeks. Near the end of the second week I had a horrible reaction. It's been 3 months and my balls are nowhere near what they were before I used the stuff.
I'm in constant discomfort and the skin on my balls, when relaxed, looks atrophied and red. My balls never looked anything like this before the Betamethasone cream.
Sometimes they feel moist, sticky and raw when I walk around a lot. A very horrible feeling.
I don't know if I'll ever be the same again.
Did my doctor ever even bother to mention to me that he was giving me a steroid cream? NO.
Did the pharmacist ever give me the literature that came with the medicine or tell me it was a steroid cream? NO.
How these people have medical licenses is beyond me.
The worst thing I ever did was put my health in their hands and believe that they would do what's in my best interest. I'm glad to know that my health was that important to them.
I would have been better off in the hands of the Doctors at Auschwitz.
Even if you used the steroid cream that long, the effects go away after a while by themselves, Steroids do not cause permanent skin damage. I'm sure that thinking that your skin is damaged can make it feel that way, and looking at the skin of penis--which is thin anyway--convinced that it's thinner than it should be doesn't help either.
Basically, there is no way you aren't completely OK. Your best bet is to accept that, ignore any sensations as unimportant, and not look.
Of course, if you get another rash, check it out. I'd be willing to bet, by the way, that during those 6 months you didn't have yeast infections very much or at all. Women get yeast infections all the time, but men rarely catch them. Chances are you had irritation, which is why they recommended steroids (steroids are not a treatment for yeast.)
Best.
Dr. Rockoff