痂皮 is read as かひ (kahi) and means crust.
かひ
kahi
けがわ
kanji "fur" radical
かわ
mask (hiding one's true nature)
うわかわ
epithelium
じゅひ
bark (of a tree, etc.)
だっぴ
freeing oneself
ひとかわ
unmasking
ひょうひ
facade
うすかわ
thin skin
ちゅうかひ
mesocarp
ないかひ
endocarp
がいかひ
exocarp
ちゅうひ
mesothelium