Weird. My dermatologist has suggested narrow band UV light therapy. They noted a couple people with this condition having success, so it would be worth a try. A few times a week for no more than 3 minutes. They do have this available in office. My insurance does not cover for this condition. They told me I could try this on my own as long the device was FDA approved & Narrow band UV. Other types of UV light are dangerous.
I have only just gotten it in the mail. I hope it helps.