Hi,
There is a not common, but not unknown either, side effect with lupus. It is called "platelet function abnormality". Basically, the platelets are there, BUT they don't work right.
The "new bruises" you are describing sound much like what I get. The capillaries will spontaneously, with no impact or cause, break and bleed in the surrounding tissue. Sometimes when these happen, I can feel a sort of stinging sensation. At times, I can go for long stretches without any problems, but then they stop working and pop up with new "bruises". If I cut myself during one of these times I can have a hard time getting it to stop. Usually, pressure will be the best thing to finally get the clot to hold. I have found that if I am doing a lot of bleeding, that I need to add red meat into my diet. In summer, I have a garden and have a good supply of leafy greens and this helps as well to keep it better controlled.
According to my hematologist, there are more people who have lupus with this, but they are misdiagnosed and if not known, can have a hard time to treat them should they have a crisis. I had to go thru the Puget Sound Blood Center in Seattle, WA, in order to get diagnosed.
Hopefully this will give you and your doctor some additional info on how to proceed with your care.
Sally