If not on the scalp large callus formation damage or skin, Scale filings , can only use scissors Clips hair, not pushing hard with fader.
头皮上若有大片不平整损害或痂皮、鳞屑时，只能用剪刀剪短头发，不可用推子硬推。PsORiasis: Chronic, recurrent skin disORder with reddish, slightly elevated patches OR bumps covered with silvery-white scales.
银屑病：一种慢性复发性皮肤病，特征为红色、轻度隆起的斑块或丘疹，上覆以银白色鳞屑。The bugs, which are less than a millimetre long, feed on scales of human skin and produce allergens which are easily inhaled during sleep.
这些体长不超过一毫米的屋尘螨依靠吃人皮肤的鳞屑生存，并且释放一些很容易被人睡觉时吸入的过敏素。In its typical form, psoriasis results in patches of thick, red (inflamed) skin covered with silvery scales.
银屑病的典型表现是皮肤出现红色（炎症）斑块，上覆盖有厚的银色鳞屑。Shark skin is made of tiny scales known as dermal denticles that can be seen here.
鲨鱼的皮肤是由被称之为肤齿的微小鳞屑所构成。It may look like a severe sunburn, later becoming reddish brown, rough, and scaly.
初看似严重的晒斑，后呈红褐色，粗糙并有鳞屑。The beginning of palm red lesions often is red envelope or dot or maculopapule, with dry squames. . .
初起皮损往往是红包或棕红色小点或斑丘疹，有干燥的鳞屑…Psoriasis is a common chronic skin disease, whose character is in erythema appeared repeatedly in multilayer silvery white dry squames.
牛皮癣是一种常见的慢性皮肤病，其特征是在红斑上反复出现多层银白色干燥鳞屑。The scales give shark skin a very rough, sandpaper-like texture, make it very strong.
这些鳞屑使鲨鱼的皮肤变得异常粗糙，带有类似砂纸的纹理，而且非常强韧。