I have Grover's Disease, confirmed by a dermatologist and a pathology. My first major outbreak was in 2004, with subsequent major outbreaks in 2006 and 2007. I have discovered that the outbreaks are caused by ingestion of sulfites which I am apparently sensitive to. As you may know, sulfites are plentiful in all manner of food and drink, especially psckaged french fries and hash browns, out of season fruits and vegatables and unfortunately, wine and brandy. (and probably beer) I believe that many years of enjoying alcoholic beverages may have damaged my liver's ability to process sulfites. However, I have found that taking molybdenum has negated my problem with sulfites and I am no longer troubled by Grover's. I take one capsule per day (1, 000 mcg). I have no trouble with wine and occasionally even have a few french fries. I don't know if sulfites cause Grover's outbreaks in anybody else but you might want to consider it.