psorayoudaoicibaDictYouDict[psora 词源字典]
"Any of various skin diseases characterized by the presence of scabs or scales, usually with itching; especially scabies, mange, or (in later use) psoriasis", Late 16th cent.; earliest use found in John Banister (1532/3–?1610), surgeon. From classical Latin psōra or its etymon ancient Greek ψώρα itch, mange from an alternative form (with different vocalism) of the stem of ψῆν to rub, wipe + -ρα, suffix forming nouns.[psora etymology, psora origin, 英语词源]