What do the horizontal and vertical stripes of toenail cover mean?

Vertical stripes: the nail surface is not smooth enough, and there are straight stripes, which usually appear after overwork and excessive brain use; These vertical stripes will appear obviously in the case of insufficient sleep. If vertical stripes persist, it may be a chronic disease of internal organs. If not nursed back to health, with the development of the disease, nails will become uneven and even crack.

Horizontal stripes: The horizontal stripes on the nails are the records of the lesions that have occurred. In other words, when there are horizontal lines on the nails, there must be some lesions in the body. Generally speaking, at the beginning, the stripes are only at the bottom of the nails. With the growth of nails, it gradually moves upward, indicating that the onset time is getting closer and closer.