Dirt, lint, and personal care products are also common culprits.
Meanwhile, if the gunk turns from gray to green, that means you’ve got bacteria underneath your nails.
Your first line of defense against the icky stuff that gets stuck under your nails: Keep them short.
What are the black things under my nails?
A narrow black line that has formed vertically underneath your nail is called a splinter hemorrhage. It occurs for a variety of reasons and may be harmless or a sign of a more serious health condition. The condition is caused by damaged small blood vessels underneath your nail.
How do you keep dirt from getting under your nails?
Hold a bar of soap under water and get it thoroughly wet. Any type of bar soap is suitable. Run your nails over the surface of the soap. Dig your nails in a bit so that the soap builds up underneath the nails.
What does melanoma look like under the nail?
Subungual melanoma often starts as a brown or black streak under a toenail or fingernail. A person may mistake it for a bruise. The main symptoms associated with subungual melanoma are the following: A bruised nail, and dark streaks or stains on the nail with no known cause, may be signs of subungual melanoma.
What kind of germs are under your fingernails?
Fingertips are hives of nastiness, and are home to various types of bacteria, fungus, and YEAST (eww). One particularly prevalent germ found under nails is Staphlococcus aureus, which can cause a load of crazy skin infections like boils and abscesses. Mmmm, oral boils.
Why do I have black under my nails?
Another cause of black lines on the nails is a splinter hemorrhage, which occurs when blood vessels under the fingernail are damaged, often due to injuries, such as hitting. More seriously, a black line or lines on the nails can indicate the presence of melanoma, a dangerous form of skin cancer.
What is the black spot under my nail?
Melanoma: This is the most serious type of skin cancer, which often appears as a dark brown misshapen spot. Such spots can also occur underneath nail beds. Trauma: Usually caused by an injury, trauma to the toenail can cause the blood vessels beneath a nail to break.