Low Histamine Diets

So this Saturday I sat down and did some research again into my horse's mysterious ankle funk. Finally this search has seemed to be fruitful. Before I always wound up chasing my tail trying to find a condition that fit well. The issue is it is a persistent scratches like funk that hardly responds to even the most aggressive treatments. To get to the point it seems he has Pastern Leucocytoclastic Vasculitis or PLV for those of us who don't speak science well. The big reason for trying to find a name to put to it is because we have had vets trying to diagnose and never getting it right most of his life (10+ yrs). This scientific article that really gave me the "AH HA!" moment. Equiderma also has a decent article on it. They have the most layman friendly article that summarizes all the information I found from other sites well. Back to the vet journal article, they described the non-pigmented skin issues, but what no one else mentioned is the pigmented skin issues. Pigmented skin tends to become "alopecic and characterised by scaling." Dead fit. Both for pigmented and non-pigmented. Also, from the articles I have read PLV has just as likely of a chance if not more to wind up on the fetlock joint as the heels. Anyone who has dealt with scratches can tell you while scratches can happen other places, but it most often happens in the crevices of the pastern. My plan of attack is to wash daily with one skip day if absolutely needed and if it is basically clean. I will be using Equiderma's pastern funk package (my naming) and summer whinnys to protect the area from sunlight and keep it dry. Hopefully this will work to get it under control.