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If you've noticed horizontal lines on your nails, you may be wondering what they mean. It turns out, they could be telling you something about your health.

Lichen planus is an autoimmune disease in which lines can appear on the nails. These are also called Beau lines, which can also increase due to stress or any disease.

Zinc deficiency can lead to Beau lines, while biotin deficiency can cause ridges and brittle nails. Nail infections: They can also cause ridges or other changes in your nails.

Your fingernails might be more revealing than you think, offering key clues about your overall health, ... Conditions like Beau's lines, horizontal ridges on the nails, ...

"Beau's lines can indicate zinc deficiency, while brittle nails are a sign of hypothyroidism or vitamin B7 deficiency," says Mary Pearson, a paediatrician working at the University Hospital of Wales.

2. Nail Ridging (Horizontal Lines) One telltale sign of significant stress or trauma on your nails is the appearance of horizontal ridges, known as Beau’s lines.

Beau’s lines are transverse grooves in the nail, says Azzawi. They result from a recent temporary disturbance in the body, such as an acute trauma or viral illness , she says.

Beau's lines are horizontal indentations that run across the nails. These lines can indicate a temporary interruption in nail growth due to a serious illness, injury, or infection, such as ...