Scabies
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http://bit.ly/kanji_scabies
1.a contagious skin infection caused by the itch mite
2.a persistent and contagious disease of the skin causing inflammation and itching and loss of hair
Japanese calls Kai-Sen.
Scurvy
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http://j.mp/kanji_scurvy
a condition caused by deficiency of ascorbic acid (vitamin C)
Japanese calls Ka-Gan.
Keratosis
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http://j.mp/kanji_keratosis
1.any skin disorder consisting of a growth that appears horny
2.a skin condition marked by an overgrowth of layers of horny skin
Japanese calls Ga-Sho-Fu