#7 Beau lines
The majority of the time, lines that run the entire length of a fingernail are normal and not dangerous. But if you have deep grooves along the entire width of your nail, it means that something temporarily prevented your nails from growing or slowed them.
Beau’s lines are also a sign of uncontrolled diabetes, a side effect of cancer treatment, or a reaction to exposure to freezing temperatures in persons with Raynaud’s disease, an uncommon blood vessel condition.
Consult your dermatologist or physician if you can’t think of anything that might have contributed to your nails developing slowly or not at all. Nails frequently begin to grow properly once the cause has been identified and taken care of.
If you are curious and want to know more signs that can indicate some other dangerous conditions, you should also check out: 8 Unexpected Signs You Might Have Lung Cancer
