I had some blood tests run last week (I have been having vision problems/headaches and have had optic neuritis so referred to a neurologist who is looking to exclude things). The consultant's secretary called me on Friday to say that I have a very low platelet count. Obviously I consulted Dr Google and found it would explain the extremely heavy periods I have been having. I also read about petechiae rash and I'm wondering if this what I have on my forearms as per the picture. Could anyone take a look and tell me if this is what this is? I hadn't thought anything about it (I guess I've had it for about six months)