All
 C16 Congenital, Hereditary, and Neonatal Diseases and Abnormalities D009358 +
 C16.131 Abnormalities D000013 +
 C16.131.831 Skin Abnormalities D012868 +
 C16.131.831.512 Ichthyosis D007057 +
 C16.131.831.512.400 Ichthyosiform Erythroderma, Congenital D016113 +
 C16.131.831.512.400.375 Hyperkeratosis, Epidermolytic D017488