I could be wrong as I've just started trying to research the situation, but I think the difference is that the planopilaris is strictly the scalp as opposed to oral, etc. I had had bouts of hair shedding over the years, but it would usually stop..this was so much worse and has been like a year and a half since it got so extreme but I was taking vitamins, etc., that I thought would promote regrowth, but had no idea that is no option with this autoimmune disorder or that I even had an auto immune disorder. it cannot regrow once it is gone with this diagnosis. I have other conditions such as diabetes, etc., but nothing that contributed to this I don't think. I hope you are able to get a biopsy if one is needed...I was lucky that thankfully the dr noticed and acted quickly. I was actually at the visit for an unrelated issue so For that I am grateful.