This case was named by a French doctor named Joseph Honore Simon Beau who first described it in 1846.
Bo lines have several other causes, all of which lead to a temporary stop in cell division in the womb of the nail. These causes include, according to the following agencies:
2- Obsession of nails or tight shoes
3- Skin diseases
(Such as dermatitis and nail inflammation)
4- Some drugs (such as chemotherapy)
5- Viral infection (such as hand, foot and mouth disease)
6- Pemphigus disease
7- Kawasaki disease
8- Uncontrolled diabetes 9- Peripheral vascular disease
10- Diseases associated with high fever, such as scarlet fever, measles, mumps, and pneumonia.
11- Beau stripes can also be a sign of zinc deficiency.