If you've ever wondered about those white dots, it's time to satisfy your curiosity.
Most white marks (called leukonychia) are caused by bubbles of air underneath the fingernail.
They can occur in several patterns, including the one seen below.
White marks usually occur due to a minor injury to the base of the nail.
They can also be hereditary, but in some situations, they could indicate a medical issue.
Some medical conditions associated with the spots include fungal infection and vitamin deficiency.
Leukonychia can also indicate a more serious issue such as an organ failure.
To prevent the spots, make sure that you're getting enough zinc and protein in your diet.
The protein will help to rebuild damaged fingernails, while zinc prevents the spots from forming.
If you polish your nails, you can also try a different brand of nail polish.
If you suddenly see a large number of white spots, be sure to tell your doctor.