Figure 1.

Manifestations of skin lesions with different types of calciphylaxis. According to the affected parts of skin lesions, calciphylaxis can be classified as central and peripheral types. The central calciphylaxis mostly involves fatty central areas such as abdomens, buttocks, and thighs (A–D), while the peripheral type is limited to peripheral parts with a small amount of adipose tissue, such as hands, feet, and penis (E–J). Typical skin lesions of calciphylaxis mainly show livedo reticularis, purpura, sclerotic plaques, necrotic ulcers, and black eschar formation.