Hi, Denise. Petechaie are common in lupus. So is purpura (the much larger purplish marks). I think both are due to abnormal blood coagulation under the skin. I think the purpura are the ones rheumies may worry about, and only if they feel a certain way to the touch, which may suggest vasculitis.
My ankles are badly mottled, with red blotches due to capillary damage. On my first visit to him, my rheumie called it *cutaneous vasculitis*. If the skin doesn't ulcerate or break down, it's not considered dangerous. In contrast, vasculitis of the internal organs is a serious condition, and ditto with skin breakdown.
Where are your dots? Does your skin surface look normal, other than color?
I think your best bet is to run this all by your rheumie, as (obviously) I'm just a patient. You'll be seeing her soon anyway, to get test results, right? And speaking of tests, good luck on yours. Sincerely, Vee