| 
 EPS 
| • | elastosis perforans serpiginosa  (vs. cutaneous larva migrans) |  
 | • | napes and side of neck, extremities |  
 | • | 40% appear in association with other genetic disorders (mnemonic: MOPED) |  
   
Reactive Perforating Collagenosis 
| • | familial; begins in childhood |  
 | • | an aberrant reaction to connective tissue injury |  
   
Acquired perforating collagenosis 
| • | pruritis is present in all cases and usually severe |  
 | • | associated with DM, renal disease, AIDS, liver disease |  
 | • | best viewed as a nonspecific reaction to skin injury |  
  
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