Brown recluse spider bite
Bullous pemphigoid
Cellulitis, necrotizing fasciitis
Erythema nodosum
Vasculitis
Venous ulcers
Hypercalcemia
Hyperphosphatemia<unk> 
Nephrogenic Systemic Fibrosis (gadolinium MRI)
Cardiac tamponade
Pericarditis
Calciphylaxis
Brown recluse spider bite
Purpura fulminans
Bullous pemphigoid
Drug rash
Cellulitis, necrotizing fasciitis
Malaria
Erythema nodosum