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cutaneous infarction only occurs when numerous vessels in the lower dermis and subcutis are occluded:
This list of diseases can present EITHER as "dusky" or "cyanotic" purpura that is not necrotic (yet) OR as frank necrosis OR both:
| • | thrombi (hypercoagulable) vs. embolic e.g. post-procedure - fat, cholesterol |
| • | monoclonal cryoglobulinemia |
| • | anti-phospholipid syndrome |
| • | infection (e.g. ecthyma gangrenosum, mucormycosis, cryptococcal cellulitis,anthrax) |
| • | brown recluse spider bite |
| • | oxalate crystal occlusion |
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