Hi Stephanie, Yes people with Lividoid Vasculopathy have reported having ulcers that itch very badly. I have had to put benedryl cream or spray on the ulcer or at least around it to stop the itching . I have not heard of a rash like you describe with LV. Check with a dermatologist for best guess. People with LV unless they have been diagnosed with a coagulation abnormality are not at risk for clots. Do you know if your blood clots abnormally? A blood test would tell. Blood thinner is the treatment of choice for LV ,so with your other condition , your doctor would have to determine the safety of blood thinner. Keep in touch, Zenk