Sophia Delgado
The fingernail bed is the tissue that sits underneath the fingernail, helping the nail grow normally. Fingernails are made of a tough, rigid protein called alpha-keratin, which is also found in the claws, hooves, and horns of vertebrates. The nail bed contains nerves, blood vessels, lymph, and is made up of two types of skin tissue: the dermis and the epidermis. Fingernail beds are susceptible to injury, which can occur when fingers get crushed between heavy objects or jammed in something. These injuries can be minor or very painful and uncomfortable, sometimes limiting finger movement.
| Characteristics | Values |
|---|---|
| Definition | The nail bed is the tissue that sits underneath the fingernail that helps the nail grow normally |
| Composition | The nail bed is made of two types of tissues: the dermis and the epidermis |
| Function | The nail bed contains nerves, blood vessels, and lymph that supply nourishment to the entire nail unit |
| Injuries | Nail bed injuries are a common type of fingertip injury, often caused by the nail being caught or crushed between objects, or hit by a heavy object |
| Treatment | Treatment for nail bed injuries may include numbing the finger, removing the nail, and repairing the nail bed with dissolvable stitches |
| Healing Time | It typically takes around 3 months for a new, but abnormal, nail to grow back after a nail bed injury, and up to 9 months for a normal nail to return |
| Complications | Complications of nail bed injuries can include nail deformities, such as hook nail and split nail |
| Diagnostic Use | Fingernail beds can be used as an indicator of distal tissue perfusion in individuals who may be dehydrated or in shock |
| Infections | The nail bed can be susceptible to infections, such as paronychia, which can be caused by bacteria, irritants, or underlying skin conditions |
Explore related products
What You'll Learn
- Fingernail beds are used as an indicator of distal tissue perfusion in dehydrated or shocked individuals
- Nail bed injuries are a common type of fingertip injury, often caused by a finger getting caught between objects
- A subungual haematoma is when blood gets trapped under the nail bed, causing throbbing pain
- Nail bed lacerations are cuts to the nail bed and underlying nail, often requiring stitches
- Paronychia is a nail infection that can be caused by biting nails or picking cuticles, creating tiny cracks for bacteria to enter
Fingernail beds are used as an indicator of distal tissue perfusion in dehydrated or shocked individuals
Fingernails are protective plates found at the tip of the digits (fingers and toes) of primates, corresponding to the claws in other animals. The nail consists of the nail plate, the nail matrix, and the nail bed below it. The nail matrix is the active tissue that generates cells, and it is the part of the nail bed that is beneath the nail and contains nerves, lymph, and blood vessels. The nail plate, or nail body, is the hard nail area from the nail root to the free edge, made of translucent keratin protein.
The nail bed is the skin beneath the nail plate, and it is the area on which the nail plate rests. Nerves and blood vessels in this area supply nourishment to the entire nail unit. The nail bed is also referred to as the germinal matrix, keratogenous membrane, or onychostroma.
Fingernail beds are used as a quick and simple indicator of distal tissue perfusion in dehydrated or shocked individuals. This is known as the capillary nail refill test or the CRT/blanch test. The test is performed by applying pressure to the nail bed until it turns white, indicating that the blood has been forced from the tissue under the nail. Once the pressure is released, the time it takes for the nail bed to return to its normal pink colour is measured. A delayed return to the pink colour can indicate certain shock states, such as hypovolemia.
It is important to note that this test is not considered entirely reliable in adults. However, it can still provide valuable insights into an individual's health status, particularly in emergency or pre-hospital care settings. Fingernail beds can offer a rapid assessment of distal tissue perfusion, which refers to the amount of blood flow and oxygen reaching the tissue in the distal parts of the body, such as the hands and feet.
Finger Press Test: What Does It Diagnose?
You may want to see also
Explore related products
Nail bed injuries are a common type of fingertip injury, often caused by a finger getting caught between objects
The nail bed is the soft tissue beneath the nail plate, which is the hard, translucent keratin protein that forms the nail body. The nail bed contains nerves, blood vessels, and lymph, which supply nourishment to the nail unit.
Cuts to the fingertip, nail bed, or the tendons used to straighten and bend the fingertip can cause nail bed injuries. Lacerations to the nail bed, often caused by a saw or knife, can also result in this type of injury. In the case of lacerations, the cut may be visible through the nail, and bleeding may occur. Subungual hematoma, a condition where blood gets trapped under the nail bed, usually due to a crush injury, can cause throbbing pain and discolouration of the nail.
Nail bed avulsions, which occur when the nail and part of the nail bed are pulled away or torn from the finger, are another common type of nail bed injury. These injuries are often very painful and can cause the finger to swell. Finger fractures are also frequently associated with nail bed avulsions. In some cases, the nail may need to be removed, and the finger may require a splint for several weeks.
It is important to seek medical attention for nail bed injuries to prevent secondary deformities and reduce the need for future reconstruction. Treatment for nail bed injuries typically involves removing the nail plate, cleansing the area, and repairing the nail bed tissue. In some cases, stitches or drainage of the wound may be necessary.
Tips to Grow Healthy, Strong Fingernails
You may want to see also
Explore related products
A subungual haematoma is when blood gets trapped under the nail bed, causing throbbing pain
The nail bed is the skin beneath the nail plate, which is the hard nail area from the nail root to the free edge. The nail bed contains nerves, lymph, and blood vessels, which supply nourishment to the nail unit.
A subungual haematoma occurs when blood vessels under the nail bed are broken open, causing blood to collect and become trapped under the nail plate. This is usually caused by the nail being crushed or hit by a heavy object. As the blood pools under the nail plate, it causes throbbing pain and the nail may turn black and blue.
Subungual haematomas are typically minor injuries and the pain usually subsides within a few days. Minor cases can be treated with the RICE method: rest, ice, compression, and elevation. More severe cases may require medical treatment, such as a simple draining procedure to relieve the pressure and pain. This procedure involves making a small hole in the nail with a laser or needle to allow the blood to drain out.
In rare cases, subungual haematomas can cause nail deformities. If there is severe damage to the nail bed, the nail may grow back malformed or cracked. It is important to seek medical attention if there is severe pain, bleeding that does not stop, or signs of infection, or if the haematoma does not go away on its own.
The Science of Nails: How They Stick to Fingers
You may want to see also
Explore related products
Nail bed lacerations are cuts to the nail bed and underlying nail, often requiring stitches
The nail bed is the skin beneath the nail plate, i.e., the fingernail or toenail. It is the area of the nail on which the nail plate rests. The nail bed contains nerves, blood vessels, and lymph, which supply nourishment to the entire nail unit.
Nail bed injuries are a type of fingertip injury and are the most common type of hand injury seen in hospital emergency rooms. They can occur in many ways, such as when a nail is caught between two objects, hit by something heavy, or cut by a sharp object. Nail bed injuries can be minor, or they can be very painful and uncomfortable, even limiting finger movement.
Nail bed lacerations are cuts to the nail bed and the underlying nail. They are usually caused by sharp objects like knives or saws but can also be caused by crushing injuries. Lacerations can range from minor cuts to more extensive damage involving the nail bed and surrounding tissues. Symptoms of a nail bed laceration include pain, bleeding, swelling, and difficulty moving the affected finger. The pain can range from mild discomfort to intense throbbing, depending on the severity of the injury.
Nail bed lacerations often require stitches. In some cases, the nail may need to be removed, but it should grow back. Treatment for a nail bed laceration depends on the extent of the injury. Minor lacerations can be managed with cleaning, antibiotics, and proper wound care. More severe lacerations may require sutures, removal or repositioning of the nail, and wound care instructions. It is important to seek medical attention for nail bed lacerations to prevent complications and promote proper healing.
Deep Grooves in Fingernails: What Does it Mean?
You may want to see also
Explore related products
Paronychia is a nail infection that can be caused by biting nails or picking cuticles, creating tiny cracks for bacteria to enter
The nail bed is the skin beneath the nail plate, i.e., the area of the nail on which the nail plate rests. Nerves and blood vessels in this region supply nourishment to the entire nail unit.
Nail biting or picking at the cuticles can create tiny cracks in the nails or cuts in the skin, allowing bacteria to enter and cause paronychia, a common nail infection. Paronychia is an infection of the skin around the fingernails and toenails, usually resulting from bacteria, but can also be caused by Candida yeast, or a combination of the two. It can affect people of all ages, but children are especially vulnerable.
Bacteria and yeast can combine to cause an acute infection, which can be contracted by biting or picking at the nails or hangnails, being punctured by manicurist tools, or pushing down cuticles too aggressively. Acute infections develop quickly and are usually the result of damage to the skin around the nails. Staphylococcus and Enterococcus bacteria are common infecting agents in acute paronychia.
Chronic paronychia, on the other hand, occurs slowly and can last for several weeks or even come back after treatment. It is typically caused by Candida yeast, but bacteria can also be the culprit. Chronically wet skin and excessive soaking disrupt the natural barrier of the cuticle, allowing yeast and bacteria to grow and get underneath the skin. This type of infection is more common in people who work with water, such as bartenders and dishwashers, and those who bite their nails or cuticles.
Paronychia can be easily spotted through symptoms such as pain, swelling, and tenderness around the nail. The skin turns red and becomes warm to the touch, with pus building up underneath. If left untreated, the nail can start to grow abnormally and may have ridges or waves. It may look yellow or green, and it can be dry and brittle. The nail may even detach from the nail bed and fall off. In rare cases, untreated paronychia can spread deeper into the finger or toe, leading to a serious infection.
To prevent paronychia, it is important to maintain good hygiene by keeping your hands and nails clean and dry. Avoid biting or chewing on your nails, and refrain from pushing or cutting your cuticles.
Curling Fingernails: What Your Nails Are Trying to Tell You
You may want to see also
Frequently asked questions
The fingernail bed is the tissue that sits underneath the fingernail to support its normal growth.
A fingernail bed injury occurs when the finger gets crushed or jammed between heavy objects, causing a loose nail and/or blood/bruising beneath the fingernail.
Treatment for fingernail bed injuries depends on the type of injury. For lacerations, stitches may be required. For avulsions, the nail has to be removed. In the case of subungual hematomas, the blood trapped under the nail bed can be drained through a small hole.
A fingernail bed infection, known as paronychia, can be identified by symptoms such as throbbing pain, discolouration of the nail, swelling, and a smelly fluid.
To prevent fingernail bed infections, avoid biting your nails or picking at the cuticles, creating tiny cracks in the nails or cuts in the skin that bacteria may enter. Additionally, wear protective gloves when working with chemicals or water to minimise direct exposure to your fingernail beds.
