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Shutterstock

Shutterstock

Have you ever looked down at your nails and thought, “What the hell is going on here?”

I used to do that quite a bit when I was growing up because I had those big white stains underneath a few of mine. I had heard through the grapevine that they were a sign of a calcium deficiency, so I freaked out. But as it turns out, I would come to find out that they were just a sign of a past injury to the base of my nail, from knocking them around to putting too much pressure on them. My nails eventually grew out, and the white spots would disappear.

But as Glamour and dermatologist Debra Jaliman pointed out, some nail issues are caused by more than just accidental bumps and knocks here and there. Not that you should immediately lose your sh-t, but if your nails have looked like the following for a while, it might be time to schedule a doctor’s appointment.

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Google – Labeled for noncommercial reuse

Nail Clubbing

Now you should have known a long time ago that things are serious if your nails looked like this. The increased tissue around the fingertips, according to Dr. Jaliman, is a sign of a lung disease. Other more serious possibilities include inflammatory bowel disease, cardiovascular disease, liver disease and AIDS.

Google - Labeled for noncommercial reuse

Google – Labeled for noncommercial reuse

Yellow Nails

Yellows nails are often the stain of what was left behind from a particular color of nail polish. But in the case above, it could be a sign of diabetes or a fungal infection. If your nails are yellow and also slow to grow, a respiratory disease could also be the culprit.