A friend was just diagnosed with calciphylaxis, is that a serious condition?

Calciphylaxis. Calciphylaxis is a serious condition that is associated with kidney disease. You need to be followed closely by a physician.
Yes. It is usually associated with advanced kidney disease, and can be quite dangerous if not treated promptly.
Calciphylaxis. This can be a difficult diagnosis as it causes painful skin lesions that are difficult to treat while the underlying treatment for this complication remains problematic. A combination of renal physician and wound care specialist working together is best and of course your support as a friend helps too.