
Fingernails can fall off due to various reasons, including injuries, fungal infections, skin conditions, and underlying health conditions. In some cases, fingernails may detach from the nail bed due to onycholysis, which can be caused by trauma, chemical exposure, or certain medications. If you are experiencing fingernail issues, it is important to seek medical advice and take appropriate steps to prevent infection and promote nail regrowth.
Is my fingernail going to fall off?
| Characteristics | Values |
|---|---|
| Appearance | The nail may turn black and seem like it's barely hanging on. |
| First Aid | Apply pressure to the area to slow the bleeding. Clean the wound with soap and water. Apply a bandage and take an analgesic to help with pain. Ice your finger if there's swelling. |
| Prevention | Keep your nails short to prevent them from catching on objects. Avoid biting your nails. Be careful when cleaning underneath your nails. |
| Treatment | If there is a lot of blood under the nail bed, doctors will drain the accumulated blood by drilling a small hole in the nail plate. If the bone is broken or the bruise is very large, the nail may need to be removed and the nail bed repaired. |
| Recovery | It will take about 7 to 10 days for the nail bed to heal. A new fingernail will take about 4 to 6 months to grow back. |
| Causes | Acute trauma, injury, fungal infection, skin conditions such as psoriasis, certain medications, an overactive thyroid, iron deficiency, working with your fingers in a wet environment, and irritation to the nail area. |
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What You'll Learn

Nail injuries and their treatment
A nail injury can occur when any part of the nail becomes injured, including the nail, nail bed, cuticle, and the skin around the sides of the nail. This can be caused by cutting, tearing, smashing, or bruising the nail, or by the nail being torn away from the skin. Treatment for nail injuries depends on the type and seriousness of the injury.
For mild nail injuries, board-certified dermatologists recommend treating the wound by first gently trimming away any part of the nail that is not connected to the skin. Then, gently clean the wound using soap and water. If the wound is bleeding, do not put a dry bandage or gauze on top, as this will stick to the wound. Instead, apply petroleum jelly to keep the wound moist, then cover with gauze or a bandage. Repeat these steps every day while the wound heals. It is also recommended to wrap the wound with an elastic bandage, but not too tightly, to provide compression and support.
To reduce swelling, prop the injured arm or leg on pillows so that the nail is higher than the heart. Applying a cool, damp washcloth to the wound can also help to reduce swelling. Taking ibuprofen or acetaminophen can help to relieve pain and reduce swelling when the injury is new. Protect the nail while it heals by keeping a light dressing on the nail, such as an adhesive bandage or a small piece of gauze.
For more serious nail injuries, such as a large bruise or a lot of blood under the nail bed, it is recommended to go to an urgent care center or the emergency room. There, they will stop the bleeding and clean the wound. They may also create a small hole in the nail to allow blood and fluid to drain out, relieving pressure and pain. If the bone is broken or the bruise is very large, the nail may need to be removed, and the nail bed repaired.
In some cases, such as when the nail bed is infected, the doctor may need to remove the nail by force. This procedure is called a nail evulsion, and involves numbing the finger with a local numbing treatment before removing the nail.
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Onycholysis (detached nails)
Onycholysis is a common condition in which the nail separates from the nail bed, or the skin underneath the nail. It usually occurs after an injury to the nail, but it can also be caused by a fungal infection, certain skin conditions such as psoriasis, certain medications, an overactive thyroid, iron deficiency, or working with the fingers or toes in a wet environment.
The clinical features of onycholysis include an irregular border between the pink portion of the nail and the white outside edge of the nail, discoloration of the nail (white, yellow, grey, green, purple or white), the nail surface may be pitted, indented, or crumbly, and the white areas may be thicker in some areas and thinner in others. Onycholysis usually isn't painful, but the underlying cause may be.
If you notice any of these symptoms, it is recommended to visit a dermatologist, especially if it affects more than one digit of your fingers or toes. If left untreated, onycholysis can cause the nail bed to disappear, leading to a shorter or narrower nail plate. In more severe cases, it can also result in scarring of the nail bed.
Treatment for onycholysis will vary depending on the underlying cause. General measures to support nail health include trimming the nail, using antibacterial soaks, and avoiding activities or chemicals that may irritate the nail, such as nail products and nail polish. If the onycholysis is caused by a fungal infection, oral antifungal medications may be prescribed. If it is caused by a skin condition such as psoriasis, topical vitamin D or corticosteroids may be prescribed.
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Bruised fingernails
A bruised fingernail is usually the result of an accident, such as stubbing your toe or finger, or slamming your finger in a door. The bruise is not on the nail itself but on the tissue underneath the nail, known as a subungual hematoma. This can be very painful and take a long time to heal, sometimes months.
If you have a bruised fingernail, you should seek medical attention. This is because the pain is caused by blood trapped under your nail, which puts pressure on your finger nerves. This pressure can be excruciating and make it difficult to perform daily activities. If the blood is not drained within 48 hours, it will clot, causing a bulk under the nail that could lead to weeks of unnecessary pain.
If you have a large bruise under your nail, there is a chance you may have broken your finger. X-rays are important to diagnose this. If a broken finger is left untreated, it could heal incorrectly, which can cause long-term pain and interfere with the function of your finger.
If you have a bruised fingernail, you should put pressure on the area to slow the bleeding, clean the wound with soap and water, apply a bandage, and take an analgesic to help with pain if needed. You can also ice your finger if it is swollen.
In some cases, your nail may fall off as a result of the injury. If this happens, it is important to protect the sensitive skin of the nail bed with a plaster.
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Signs of infection
Fingernail injuries are common, and in many cases, the nail may fall off. This can be due to several reasons, including injury, an underlying condition, or irritation to the nail area. If you have suffered a fingernail injury, it is important to be vigilant for any signs of infection.
Paronychia is a common skin infection that occurs around the nails. It is caused by bacteria or fungi entering broken skin near the cuticle and nail fold. The main symptoms of paronychia are a painful, red, swollen area around the nail, often at the cuticle or the site of an injury. There may also be pus-filled blisters, especially with a bacterial infection. If the infection is fungal, the nail may look detached, abnormally shaped, or discoloured.
Other signs of infection to look out for include:
- Pus
- Redness and warmth around the nail
- Swelling
- Green discolouration, indicating bacterial growth
- Persistent pain
- Lack of blood flow to the nail or fingertip
- Unusual colours on the fingertip, such as blue or white
- A large amount of blood under the nail bed (subungual hematoma)
If you notice any of these signs, it is important to seek medical advice promptly. Treatment for nail infections typically involves antibiotics or antifungal medications. In some cases, drainage of pus or blood and wound care may also be necessary.
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Preventing nail injuries
Fingernail injuries are quite common, and they can occur due to several reasons, such as a blow to the nail, stubbing a toe, or even from repetitive trauma. While some nail injuries are minor and can be treated at home, others may require medical attention.
To prevent nail injuries and maintain nail health, here are some measures you can take:
Keep Nails Trimmed and Well-Maintained
It is essential to keep your nails trimmed and short to prevent them from bending or catching on objects, which can lead to nail injuries. Well-maintained nails are less likely to suffer trauma or accidental tears.
Avoid Irritants and Nail Products
Certain nail products, such as harsh chemicals or even water exposure, can irritate the nails and lead to conditions like onycholysis (detached nails). It is advisable to avoid or minimise the use of such products and always wear gloves when handling potential irritants.
Wear Properly Fitting Shoes
Ill-fitting shoes, especially those that are too tight, can cause repeated trauma to the toenails and lead to nail deformities. By wearing properly sized shoes with a wide toe box, you can prevent nail injuries and reduce the risk of toenail trauma.
Protect Nails During Activities
When engaging in sports or activities that may pose a risk to your nails, it is crucial to wear protective gear. This includes gloves, proper footwear, or any other specialised equipment that can shield your nails from potential trauma.
Manage Underlying Conditions
Certain underlying health conditions, such as skin conditions (e.g., psoriasis), autoimmune disorders (e.g., type 1 diabetes), or an overactive thyroid, can increase the risk of nail issues, including onycholysis. Proper management of these conditions can help reduce the likelihood of nail detachment and other nail injuries.
Remember, if you experience a severe nail injury, especially one that affects the nail bed or results in heavy bleeding, it is important to seek medical attention promptly.
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Frequently asked questions
Fingernails can fall off after an injury, either right away or weeks later. If there is a lot of blood under your nail, a doctor may drain it by drilling a small hole in the nail plate.
If your fingernail falls off, it is a good idea to protect the sensitive skin of the nail bed with a band-aid.
A new fingernail will take about 4 to 6 months to grow and replace the lost nail. Toenails take about 12 months to grow back.
The best way to get immediate relief from a smashed finger is to treat inflammation. Try to calmly assess the damage and whether you need medical attention. Clean the area with soap and water or an antibacterial rinse, then cover the wound with sterile gauze or bandages.
Keep an eye out for signs of infection, including fever or feeling unwell.











































