名詞 psoriasis:

1. a chronic skin disease characterized by dry red patches covered with scales; occurs especially on the scalp and ears and genitalia and the skin over bony prominences

pso.ri.a.sis

n.（名詞）
A noncontagious inflammatory skin disease characterized by recurring reddish patches covered with silvery scales.
牛皮癬：一種非傳染性的皮膚炎癥，以不斷出現(xiàn)的覆有色鱗的紅斑為癥狀

來源：
Greek psôriasis [itch, mange]
希臘語 psôriasis [癢，獸疥癬]
from psôrian [to have the itch]
源自 psôrian [發(fā)癢]
from psôra [itch]
源自 psôra [癢]

【引伸】
pso.riat.ic