It is common for a nail to turn black after an injury. The black or purple-black color is caused by blood under the nail and will go away as the injury heals. Black, brown, or purple discoloration under a nail that has not been injured may be caused by melanoma.
How long does a fingernail stay black?
The trapped blood will eventually be reabsorbed, and the dark mark will disappear. This can take 2–3 months for a fingernail, and up to 9 months for a toenail.
Are black nails normal?
Linear melanonychia is considered a normal fingernail color variation. The condition occurs when pigments in the nail known as melanocytes make excess pigment. This causes the nail beds to darken.
Do black fingernails go away?
It is common for a nail to turn black after an injury. The black or purple-black color is caused by blood under the nail and will go away as the injury heals.
How long does a black fingernail last?
The discolored nail will eventually grow out — or in some cases it may fall off or need to be removed — and be replaced by a new, healthy one. This could take anywhere from about eight weeks for a fingernail to six months for a toenail.
What do you do if your nail turns black?
Over-the-counter ointments, creams, and polishes are usually effective. Severe cases may require a prescription antifungal treatment. If a black toenail is caused by an injury, the resulting spot from broken blood vessels will disappear once your nail grows out.
Do black nails always fall off?
Unless the area of bleeding is very small, an affected nail will usually fall off on its own after several weeks because the pooled blood has separated it from its bed. A new fingernail can regrow in as little as 8 weeks.
Will a black toenail always fall off?
When injured, the toenail will often appear black or purple as blood collects under the nail, which is called subungual hematoma. The blood puts pressure on the nail, which may fall off after several weeks.
What happens if your fingernail turns black?
It is common for a nail to turn black after an injury. The black or purple-black color is caused by blood under the nail and will go away as the injury heals. Black, brown, or purple discoloration under a nail that has not been injured may be caused by melanoma.
What disease causes black fingernails?
Melanonychia is caused when the pigment cells, called melanocytes, deposit melanin into the nail. Melanin is a brown colored pigment. These deposits are usually grouped together. As your nail grows, it causes the stripe of brown or black to appear on your nail.
What to do when you smash your fingernail and it turns black?
– Straighten a paper clip, and heat the tip in a flame until it is red-hot.
– Place the tip of the paper clip on the nail and let it melt through. …
– Do not push or apply pressure on the paper clip. …
– Go slowly, and reheat the clip as necessary. …
– As soon as the hole is complete, blood will escape and the pain will be relieved.
How do you keep a black toenail from falling off?
Trim your toenails straight across (instead of rounding them off) and keep them even with the edges of your toes. Make sure your shoes are a thumb’s width longer than your longest toe. Wear steel-toed boots or shoes if you work in an area that increases your risk of having something heavy fall on your feet.
What happens when you smash your finger and it turns black?
After a day or two, blood will likely start to build up under your nail. You might see the nail turning color—usually dark blue or black—and feel a lot of pressure. This is what happens when a bruise is contained in the tiny space at the tip of a finger.
What causes fingernails to turn black?
Some types of bacteria, as well as fungal infection of the nail, can also produce melanin that discolours the nails. Nicotine stains from cigarettes, certain medicated lotions and dirt can also stain our nails. Injuries or ill-fitting shoes can cause bleeding under the nail, making it appear black.
Will blood under fingernail disappear?
A minor subungual hematoma usually heals over time without treatment. The trapped blood will eventually be reabsorbed, and the dark mark will disappear. This can take 2–3 months for a fingernail, and up to 9 months for a toenail.
Should I go to the doctor if I smashed my finger?
Speak with a doctor or nurse if your smashed finger causes extreme pain or involves more than just the fingertip. You should also seek medical help if: you can’t straighten your finger. the finger is noticeable bent or crooked.
Can a smashed finger cause a blood clot?
A blood clot can form after a trauma to the finger damages blood vessels or breaks a bone. Examples include: a heavy object falling on the fingers, like when you accidentally hit your finger with a hammer. a crush injury, such as when you get your finger caught in a car door.
Do bruised toenails always fall off?
As blood builds up under your nail, it may separate from your nail bed. It can take several weeks for your toenail to completely fall off. Contact your doctor if the subungual hematoma covers more than a quarter of your toenail.
What happens if you leave blood under your nail?
In addition to discoloration, blood under the nail can result in pressure and pain, which can be relieved by a primary care physician or podiatrist (i.e., “foot doctor”). Delayed treatment can result in nail deformity or infection.
How do you fix black toenails?
Over-the-counter ointments, creams, and polishes are usually effective. Severe cases may require a prescription antifungal treatment. If a black toenail is caused by an injury, the resulting spot from broken blood vessels will disappear once your nail grows out.
Will my toenail fall off if it’s purple?
When injured, the toenail will often appear black or purple as blood collects under the nail, which is called subungual hematoma. The blood puts pressure on the nail, which may fall off after several weeks.