In the cuticle there are white blood cells from the multi-core a small abscess formed, and the loose mixture of parakeratotic cells, see the air gap, resulting in the clinical scales white.

• 在角质层内有由多核白细胞构成的小脓疮，并在疏松的角化不全细胞见夹杂着空气间隙，以致临床上鳞屑呈白色。