I went through almost the same things as you, my story is long as well. I will try to make it short:
Same synptoms, went to many doctors, MD, urologist, etc.. many tests, many medications, spent so much money and my life was hell for 1.5 years. I finally was dignosed with balanophostitis wich was redness of the glans and inflammation of the foreskin. The use of steroids creams left me with a red and very thin skin. None of the medications did any good to me. The last urologist I went suggested me to do a circumsicion, because he said that the foreskin was creating the problems for the moist and humed conditions that was creating the growth of fungus and yeast. After trying everything I went for the surgery, my irritations heal as the same time I was healing from the surgery. I have been cut already for 3 years and my penis still looks healthy. I am not suggesting you circumsicion, it is a decision you have to take along with your doctor. I still believe that circumsicion has to only be done for medical reasons and that the normal state of a penis is to have a foreskin. It worked for me, I miss my foreskin but I'm happy that I don't have those irritations no more. Try to do the following:
Spread plain yoghourt on your penis 2 times a day.
Dilute 2 teaspoons of white vinegar in a glass of water and soak your penis with that 2 times a day, morning and nights.
Air dry your penis after every shower.
Please do not use those steroids creams no more.
Ask your doctor if Nystatin cream will be good for you.
A picture of your condition will be of a lot of help to see if that looks the same of what I had. Any questions? I will be glad to answer. Your age?
You can also read my prior comments. The home remedies were given to me by a doctor didn't work for me but have been very useful for other members. Ihope you get better
I think your condition has been solved and what you have is a consecuence of the use of the steroid creams. Steroid creams do more harm than good. Happened to me and I have read many stories of members going through the same. Leave your penis alone don't pay so much attention to it and let the skin repair by itself.