@myoga Hi. Thank you. So "petechiea" is the name of what I had. When I first discovered that my foot was purple underneath, on 20 Dec (after taking Letrozole for just over 3 months) the purple area was surrounded by small clusters (thumnail size) of these little reddish brown dots that must have been petechiea. Thank you so much for this, since I am getting nowhere with the doctors. They send me to the podiatrist that says that the purple is a normal reaction to temperature change. No, it isn't. Thanks again.