Purpura is bleeding under the skin and can be caused by a few things, but low platelet counts are the most common. Low platelet counts can reverse them selves in many cases. In other cases, treatment is needed... My platelet count became very low (2K when it should be over 100K) but that was pretty unusual. If counts get down to 50K they start watching you closely and if it is below 30K, treatment could be warranted.
If you platelet count was low in the past, the CBC test will not show that. It could show that your red blood cells are newer than most, but I think that's it... I'm not medically trained though, so take what I say with a grain of salt. Good luck.
I haven't seen the Purpura but I do still have the tiny red flat spots (petechiae?) I noticed some more on my shoulder today. I hope I am eating enough for the tests. There are days when I can hardly eat because of slight nausea or a general ill feeling.
I also had another question, and I am sorry if I ask a lot. But I noticed several months ago that my cheek has become a bit sunken in, Now I am 98 pounds but if it was due to weight loss wouldn't it be both sides? And can celiac disease make your skin that way?