Head of penis irritation

I'm 28 years old and have had an irritation on the head of my penis for over 1 year now and there is a layer of skin missing. It is slightly red and irritating. My penis irritates in my boxers and sex with my partner has almost completely stopped. I'm circumsized and it also started when I took acne antibiotics.

I've seen 2 dermatologists, two general doctors and one urologist. This is definitely not an STD since I've gotten tested. I've tried many creams (hydrocortisone ointement, Nystatin, antifungal cream, Cicalfate) and none of them worked. Now, I only wear cotton briefs and I stopped washing my penis with soap. Recently, I've seen a Urologist and his theory seems to make the most sense. He says he's had several similar cases where the patients were circumsized. I live in Canada and winter time can get quite cold. It happened to me in February of 2009 walking every day to work in the cold while I was using antibiotics for my acne. He said that the cold can dry sensitive parts of the skin such as the head of the penis and cause this irritation. He told me to stop using the hydrocortisone cream and just use a moisturizing cream such as Galaxal base or Aveeno (and try to find the moisturizing cream that works the best for my skin). Apply a lot of it 2 times a day for a while. He said it may take 6 month to heal and depending on the weather, some days the irritation will be worse and he said it may come back on and off.

I'm becoming desperate and want to know if all of this makes sense. I've been using Aveeno for 3 weeks now and still no results. Does all of this make sense? Does anyone have a better solution or better moisturizing cream to use?

I would appreciate the help,
Chad

  

Recently, I went to see a Urologist and he told me to moisturize it as much as I can