Too few proteins lead to night blindness, perifollicular hyperkeratosis, xerophthalmia, keratomolacia, increased morbidity and mortality in young children.

维生素不足可导致夜盲、毛囊周角化过度、异物、儿童发病率我死亡率增高等。

Histopathologic examination showed hyperkeratosis of epidermis, increased thickness of the granular layer and dilation of subpapillary vessels filled with red blood cells.

组病理学检查示表皮角化过度,呈样增生,颗粒层增厚,真皮见大量增生扩张的毛细血管,管腔内含红细胞,血管周围淋巴细胞浸润。