Symptoms. The symptoms of calciphylaxis include a netlike pattern on the skin that is purple in color and deep, ulcerating lumps on the skin. These turn into very painful sores that crust over but have trouble healing. The crust is a blackish-brown color that may resemble burnt material. The ulcers most often appear in places where the person has a lot of fat, such as their thigh, buttocks or abdomen. However, the ulcers can be found anywhere on the body. Because these wounds don’t heal, they put the person at risk for sometimes life-threatening infections. The mortality rate for calciphylaxis is very high and patients die from multiple organ failure.