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Doctor insights on: Black And Blue Big Toenail

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My big toenail on both feet black and blue some pain what is this from?

My big toenail on both feet black and blue some pain what is this from?

Black and blue: A black and blue toenail is usually due to trauma to the nail usually when running in shoe gear. If the nail is completely black and blue you may need to have the blood that has developed under the nail drained if this is causing you significant pain. ...Read more

Dr. Arnold Beresh
340 Doctors shared insights

Toenails (Definition)

Toenails are the hard coverings at the end of the toes. Nails are made out of a protein called keratin. They function to protect the end of the toe and to increase sensitivity of touch. Good nail care is important to prevent ...Read more


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Why is my big toenail black and blue at the cuticle? It hasn't changed in weeks and I can't recall any serious trauma to that area.

See a doctor: My concern here is whether this is a bruise or something else. If you can't recall any trauma or wearing tight shoes, perhaps this is not a bruise. Melanomas can arise under the nail. Please see a doctor for an examination. ...Read more

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There is a blue/black spot under my big toenail and I don't know what it is. I removed my nail polish today and saw it, and am now very concerned.?

There is a blue/black spot under my big toenail and I don't know what it is. I removed my nail polish today and saw it, and am now very concerned.?

Photo documentation.: A black/ blue spot under the nail in a 16 year old is probably nothing more than a bit of dried blood trapped under the nail. This could be the consequence of a minor bump of the toe of a pressure injury. Without actually seeing it, I guess it could be something else, but I doubt it. To remove all concern, you might have a physician take a look at it. ...Read more

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What causes black and blue toenails?

What causes black and blue toenails?

See a podiatrist: If you are runner, this is a common injury called "black toe syndrome" due to blood bruises under the nail plate. Other causes of black toenails are infections - either bacterial or fungal. Another cause may be from a fracture in the last bone of the toe. In any case, see a podiatrist who can examine and treat any of these conditions and recommend ways to prevent recurrence. ...Read more

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What does it mean when your toenail turns black and blue?

What does it mean when your toenail turns black and blue?

Hematoma: Sounds like you traumatized your nail and blood is under it. Blood under the nail is called a subungual hematoma. ...Read more

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What's the reason why my toenails are black and blue underneath?

What's the reason why my toenails are black and blue underneath?

Bruised...: They probably had some sort of trauma causing a bruise under the nail plate, most likely from rubbing in the shoes. This should grow out with time. ...Read more

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Both big toenails discoloured, blue looking; right one particularly looks as though black streak in it. Slight pain but nothing major. What to do?

Both big toenails discoloured, blue looking; right one particularly looks as though black streak in it. Slight pain but nothing major. What to do?

Microtrauma: It sounds like your toenails are hitting the end of your shoe. This usually happens if the toe box is either too small (toe is pressed up against the end) or too large (foot is sliding around and the toe is hitting the end). This is very common in runners--it can lead to either thickening of the nail, or it may eventually turn black and fall off--a new nail will grow in within a year. ...Read more

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If under my toenail it turns black and blue will the nail fall off?

If under my toenail it turns black and blue will the nail fall off?

Not necessarily.: No doubt there has been trauma to the toe and the bruise is trapped under the nail. Depending on how extensive the bruise is and the pressure it may have caused will make a difference as to whether you'll loose the nail or if it will quiet down after proper first aid. ...Read more

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How to get rid of blood clot under toenail after heavy object fell on it? Toenail is about 80% black and blue.

How to get rid of blood clot under toenail after heavy object fell on it? Toenail is about 80% black and blue.

When: When a toe is traumatized by the nail, a small blood vessel underneath the nail can break and cause bleeding under the nail. Blood collects between the nail plate (the nail itself) and the nail bed (the soft tissue under the nail plate), and pressure from the blood can cause the nail plate to lift off the nail bed. The blood causes the discoloration, and the pressure causes pain.

In more severe injuries of this kind, the bleeding is such that it will lift the nail plate so much and to cause the nail to come off. It can take a few days for the pressure to build up and lift off the nail. Once it does, if you can bear it, the pain subsides, since the pressure is relieved. If the injury is more minor and the bleeding is not so much, it might not be enough blood to force the nail up and off, in which case, it will take months for the blood under the nail to slowly grow out with the nail.

If you're in pain, I recommend you go to your doctor, or even an er to have the blood drained. If the nail plate is fairly intact and not separated from the nail bed, drilling a small hole in the nail plate (it doesn't hurt) will allow the blood to drain. If the nail plate is loose, taking the entire nail off is the better treatment (done under local anesthesia, no pain, quick & easy, and you will regrow another nail).

If you're not in pain and you just don't like the way it looks, you have 2 choices:
1) get medical attention to have the blood drained described above, or
2) get a pair of dark glasses so you don't have to look at it.

Hope this helps! Good luck. ...Read more

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How to know if hurt or sprained your foot before where it was swollen and partly black and blue?

How to know if hurt or sprained your foot before where it was swollen and partly black and blue?

See a Podiatrist: A podiatrist can take x-rays and may order an MRI to see if there were torn ligaments or tendons. If you are having pain it is important to do this sooner rather than later to avoid continued injury. ...Read more

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Something fell on my foot and there is some black and blue on my toes and on the side of my foot. What should I do?

Something fell on my foot and there is some black and blue on my toes and on the side of my foot. What should I do?

Ultimately an x-ray: The bruising we see after an injury is from bleeding of something under the skin. It could be soft tissue or bone. The bruising in itself is not a major problem. When your foot begins to swell and you feel substantial pain, you definitely must immobilize it and have it treated. The most immediate way to treat such an injury, is to stay off of it and keep it elevated. In doubt-get an x-ray. ...Read more

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Throbbing achy pain in right outer side of foot. A year ago she injured it and it was black and blue?

Throbbing achy pain in right outer side of foot. A year ago she injured it and it was black and blue?

Please clarify: Stated she injured it, so this is not you. If it is a woman questions come into play including birth control pills. Previous injury where the foot turned black and blue may have been a hairline fracture, and now she has refractured it. Could be blood clot or venous pooling of blood. Try rice, rest, ice elevation and an ace wrap for 48 hrs and otc naprosyn (naproxen) for 48hrs. Sx persist, see doc. ...Read more

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I walk between 4&6 miles and the top of my foot below my toes will black and blue. It goes away if I'm off my feet.

I walk between 4&6 miles and the top of my foot below my toes will black and blue. It goes away if I'm off my feet.

Nice distance!: That sounds like a healthy walk. Considerations: Is it only one foot? Is there any pain? That fact that It goes away when you are off your feet, it might be due to veins. The return circulation causes the black-blue pigmentation. If you have prominent veins in your legs and feet, this is most likely veins. ...Read more

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Help my big toe nail has been discolored for about 6 months now. At first it was reddish blue and now it's blackish bluish and a little green now.

Help my big toe nail has been discolored for about 6 months now. At first it was reddish blue and now it's blackish bluish and a little green now.

Hematoma: It sounds like a subungual hematoma. This happens usually from injury from injury to toe. Reddish blue is most likely active bleeding and black is old. The green is concerning. It should be evaluated for healing/infection. There are some bacteria that turn things green so you should see a podiatrist to evaluate. Healing bruises also turn many colors. The bruise has to grow out. ...Read more

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My pinky on my right foot is black and blue. The entire toe! It does not hurt and I can't recall hitting it. It is swollen too.

My pinky on my right foot is black and blue. The entire toe! It does not hurt and I can't recall hitting it. It is swollen too.

A BAD SIGN: Sorry, while I cannot say for certain without seeing it. Would certainly suspect it is GANGRENE that will cause significant risk of loss of limb if not treated (probably loss of some of the toe/foot no matter what but treatment has got to be better than not treatment). ...Read more

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7 weeks ago I had pereneous tendon surgery and my foot has Severe swelling and incision has dark blue/black line. Is this normal?

7 weeks ago I had pereneous tendon surgery and my foot has Severe swelling and incision has dark blue/black line. Is this normal?

If you were healing: Well and you suddenly have marked swelling - I would advise your podiatrist or orthopedic surgeon. ...Read more

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My toe nail has been black and blue now for a month. Walked a lot and the nail felt bruised at the beginning. Doesn't hurt now. Is that bad? Old blood?

My toe nail has been black and blue now for a month. Walked a lot and the nail felt bruised at the beginning. Doesn't hurt now. Is that bad? Old blood?

A Slow Grow: It sounds like there is old blood trapped under the nail. This can happen during and/or after walking a lot. There is not much to do now but wait. Time will enable the nail to grow out and slowly bring the old blood with it. Nails grow at a slow pace so be patient. ...Read more

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I twisted my ankle and my foot is swollen and black and blue down to my toes. Could it be fractured?

I twisted my ankle and my foot is swollen and black and blue down to my toes. Could it be fractured?

It could be a: Fracture, a soft issue injury, a sprain etc. To know if it is fractured you will need an x-ray. Medical history ; physical examination are also needed. Take care. ...Read more

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Why is there a vertical black line on my right big toenail?

Why is there a vertical black line on my right big toenail?

Trauma: A dark line that runs vertically down the nail can indicate that you might have traumatized the nail matrix (the area where the nail starts growing). Other possibilities are fungus, melanoma and genetics. See your doc for a full evaluation. ...Read more

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My son has a black line across both big toenails almost like it was broke then grew back together what could it be?

My son has a black line across both big toenails almost like it was broke then grew back together what could it be?

Nail discoloration: Dark lines across the nails most commonly are from either trauma or fungus. As long as it is healing he should be fine... if you are concerned, a picture or video upload will help and an exam will definitely give you the correct diagnosis and treatment if needed. ...Read more