Most commonly seen in ESRD patients on hemodialysis (~1%)
Seen almost exclusively in patients with Stage 5 chronic kidney disease
No available data in general population (non-uremic<unk> 
Calcium and phosphate levels rise beyond solubility and precipitate in arteries
May be increasing due to widespread IV vitamin D
Mortality as high as 60-80%; sepsis from necrotic skin lesions
Seen almost exclusively in patients with Stage 5 chronic kidney disease
Calciphylaxis
Brown recluse spider bite
Purpura fulminans
Bullous pemphigoid
Drug rash
Cellulitis, necrotizing fasciitis
Malaria
Erythema nodosum