I have found taking Calcium/Vitamin D has sent my Darier's Disease into complete remission. When the condition was spread all over my abdomen and back I was taking 3 tablets a day. Now I am down to one tablet 5 days a week. My condition is almost like it is not even there. I work out, go for 4 mile runs, lift heavy sand bags and I no longer break out. I am hoping this information would be useful to others. I will say this treatment took about a good 2 to 3 weeks before I saw results. Then it was another 6 months or so before all the lessions were gone. I hope this help others. It is very inexpensive to do and has improved my quality of life so much.