Beaus Lines Toes Only
They result from a sudden interruption of nail keratin synthesis and grow distally with the nail plate.
Beaus lines toes only. 657 this condition of the nail was named by a french physician joseph honore simon beau 18061865 who first described it in 1846. They usually develop when nail plate growth which begins in the nail matrix located under the cuticle is temporarily disrupted. Beaus lines are horizontal or transverse depressions in the nail they can be seen in the fingernails thumbs toenails or all nails that may be confused with nail ridging.
You may be referring to beaus lines which are grooves that run horizontally across the nail plate. Beaus lines are deep grooved lines that run from side to side on the fingernail or the toenail. As the nail grows the beaus lines can disappear.
Its not too big of a concern if you have this issue although your cosmetic concerns are quite justifiable. They may look like indentations or ridges in the nail plate.