Hi, I've been getting weird rashes that seem to be like petachiae. Here's an image of the most recent rash:
I think I've had these rashes for some time. They do not blanch under pressure, and usually fade within a couple of days. As you can see they don't really cover much of my leg. I have a number of autoimmune conditions (Crohn's Disease, Ankylosing Spondylitis) for which I take Humira and get blood tests every 6 months, including a CBC. I've never had it come up abnormal. If anything before I started Humira, my platelets were too high. Ever since starting the drug, everything comes back normal. The problem is that, most of the time, by the time I can get an appointment the rashes disappear. They don't usually reappear for several months - though recently they have appeared more regularly.
My rheumatologist doesn't seem all that concerned about the rashes. He says that they aren't purpura (I haven't asked about petachiae, but I'm assuming that he'd say something if he suspected anything). I'm concerned obviously about leukemia (mostly b/c of the possibility that petachiae can signal leukemia - though I'd think that 1) the petachiae would be more widespread and 2) it would linger longer than 2-3 days and 3) something would have come up in the blood tests). Probably more likely is that it is something related to my other autoimmune conditions. I don't have any other symptoms of low platelets, and the rashes don't really bother me all that much.