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1. Beau’s Lines
Image Source: cancernet.co.uk
You just noticed the appearance of various horizontal lines across your finger or toe nails, from side to side – if so, the condition is called Beau’s lines and it appears as a result of various injuries in 90% of the cases. In other situations, Beau’s lines can indicate serious medical conditions like vascular disease, as well as diabetes and hay fever. And if your lines are vertical rather than horizontal, then you’ll be relieved to know that these type of marks are a simple and very common sign of aging.