If You Have This One Specific Mark on Your Fingernail, You Should Get Checked for Cancer.
Although you might never think to check your fingernails for cancer, it’s lucky that one manicurist did.
A lot of salons have speculated that the woman’s mysterious line could be due to a calcium deficiency, a blood blister, or a strange hereditary mark. Yet Skinner knew better than that. She immediately told her customer that the dark line was likely a little-known symptom of melanoma, a form of skin cancer.
Now, Skinner is using her photograph of the nail (with permission) to inform and warn others.
If you happen to have a dark mark under your fingernail, see your doctor right away.