乾癬[kansen] psoriasis
苔癬[taisen] lichen
疥癬[kaisen] scabies
頑癬[tamushi] ringworm (of the body)
皮癬[hizen] scabies

皮癬ダニ[hizendani] itch mite (Sarcoptes scabiei)
疥癬虫[kaisenchuu] itch mite (Sarcoptes scabiei)
頑癬[gansen] ringworm (of the groin)
白癬[shirakumo] scalp ringworm
扁平苔癬[henpeitaisen] lichen planus

バナナの皮[banananokawa] banana peel
一皮[hitokawa] unmasking
化の皮[bakenokawa] masking one's true character
化けの皮をはぐ[bakenokawawohagu] to unmask (someone's true nature)
果皮[kahi] pericarp (ripened ovary wall forming part of a fruit)

外皮[gaihi] investment (in the sense of outer layer)
角皮[kakuhi] cuticle
桜皮[kanba] birch (esp. Japanese white birch)
乾皮[kanpi] dried hides
雁皮紙[ganpishi] traditional Japanese paper made from the fibre of plant species Diplomorpha sikokiana (high quality, glossy)