Pachyonychia Congenita

  • Mainly AD, K6a/16 mutation (type I), K6b/17 (type II)
   
 
 Jadassohn–Lewandowsky
(Type I)
 Dystrophic nails, palmoplantar keratoderma (PPK), oral leukokeratosis (benign)
 Jackson–Lawler
(Type II)
 Dystrophic nails, PPK, steatocystomas, epidermal cysts, natal teeth