Isla Bennett
Fingernails and toenails can fall off due to injuries, health conditions, or infections. Nails grow back over time, but this process can be slow and may take anywhere from 3 to 12 months for fingernails and up to 2 years for toenails. The growth rate depends on various factors, including age, climate, overall health, and the severity of the injury or condition affecting the nail. In some cases, the new nail may have grooves, ridges, or may be misshapen. Proper medical care and treatment can help promote nail growth and prevent permanent damage to the nail matrix, which is responsible for nail growth.
| Characteristics | Values |
|---|---|
| What is a nail? | A protective plate found at the tip of the digits (fingers and toes) of primates. |
| What is a nail made of? | A tough rigid protein called alpha-keratin, a polymer also found in the claws, hooves, and horns of vertebrates. |
| What is a nail matrix? | The "factory" where the body makes new nails. |
| What is the nail sinus? | The base of the nail underneath the skin. |
| What is the nail plate? | The visible hard nail area from the nail root to the free edge, made of translucent keratin protein. |
| What is the hyponychium? | Informally known as the "quick", it is the epithelium located beneath the nail plate at the junction between the free edge and the skin of the fingertip. |
| What is the function of a nail? | Protecting the distal phalanx, the fingertip, and the surrounding soft tissues from injuries. It also serves to enhance precise delicate movements of the distal digits through counter-pressure exerted on the pulp of the finger. |
| What is the growth rate of nails? | On average, fingernails grow at a rate of 3 to 3.5 millimeters per month, while toenails grow at a rate of 1.6 to 1.62 millimeters per month. |
| What factors affect nail growth? | Age, sex, season, exercise level, diet, hereditary factors, hand dominance, finger length, and overall health. |
| Can nails grow back after an injury? | Yes, nails have good regeneration capacity, and a new nail will usually grow in place of the lost one. |
| How to prevent nail injuries? | Cut your nails properly, trim toenails straight across to prevent ingrown toenails, and avoid nail biting. |
Explore related products
What You'll Learn
Nail matrix: The 'factory' where new nails are made
Our nails are protective plates found at the tips of our fingers and toes. They are made of a tough, rigid protein called alpha-keratin, which is also found in the claws, hooves, and horns of other vertebrates. The nail matrix, or "factory", is an essential part of nail anatomy, responsible for generating new nail cells.
The nail matrix is the active tissue that produces cells, which harden as they move outward from the nail root to the nail plate, forming the hard nail surface we typically associate with fingernails and toenails. This process is similar to the way a factory produces and assembles parts to create a finished product. The matrix is also known as the matrix unguis, keratogenous membrane, or onychostroma. It is located beneath the nail plate and contains nerves, lymph, and blood vessels.
The nail matrix consists of two main parts: the germinal matrix and the sterile matrix. The germinal matrix contributes about 90% of the cells that make up our fingernails and toenails. It is the primary site of nail cell production. On the other hand, the sterile matrix accounts for the remaining 10% of nail cells and plays a crucial role in keeping the nail attached to the underlying skin.
Injuries and certain health conditions can damage the nail matrix, affecting nail growth and appearance. For example, pinching or crushing your finger can injure the nail matrix, leading to bruising, ridges, or discolouration. In severe cases, the nail may fall off. However, with proper medical care, nails usually grow back, and the nail matrix heals over time.
The health of the nail matrix is reflected in the appearance of the nails. Horizontal ridges, known as Beau's lines, can indicate natural ageing or underlying health conditions. Discolouration, thinning, thickening, brittleness, and other abnormalities may also signal illnesses or nutrient deficiencies elsewhere in the body. Therefore, nail changes can be important diagnostic clues in medicine.
Olive Oil for Nail Growth: Does it Work?
You may want to see also
Explore related products
Nail growth rate: Fingernails grow faster than toenails
The human body is designed to protect itself from infections and injuries, and fingernails and toenails play a crucial role in this. The growth of nails is an ongoing process, but the rate of growth varies between individuals and even between different fingers.
Fingernails grow at an average rate of about 3 to 3.5 millimetres per month, or about a tenth of a millimetre per day. This equates to a growth of 0.123 millimetres per day for a 23-year-old, and 0.095 millimetres per day for a 67-year-old. The rate of growth is influenced by several factors, including age, sex, season, exercise level, diet, and hereditary factors. Nails on the dominant hand tend to grow faster, possibly due to increased usage. Additionally, fingernails grow faster during the day and in the summer. The growth rate also depends on the specific finger, with the index finger growing faster than the little finger.
Toenails, on the other hand, grow at a slower rate of about 1.6 millimetres per month, or about half as fast as fingernails. It takes toenails about twelve to eighteen months to regrow completely, while fingernails take only three to six months. Toenails are generally slower in growth due to less frequent trauma and a slower rate of blood circulation in the feet.
Nail growth can be affected by various health conditions and injuries. Illnesses such as heart attacks, COVID-19, pneumonia, and chemotherapy can interrupt nail growth and cause horizontal ridges known as Beau's lines. Injuries to the nail matrix, such as pinching or crushing, can result in bruising, ridges, or discolouration, and may even lead to nail loss. However, with proper medical care, nails usually grow back, and the nail matrix heals over time.
Strong and Healthy Nails: Tips and Tricks
You may want to see also
Explore related products
Nail injuries: Bruising, ridges, discolouration, and nail loss
A new nail will usually grow if lost, although it may take several weeks for the new nail to appear. In cases of severe nail matrix damage, some or all of the nail may not grow back.
Bruising
A subungual hematoma is a bruise under the nail, caused by blood pooling under the nail plate due to damaged blood vessels in the nail bed. This can be caused by blunt force trauma, such as crushing the finger with a hammer or slamming it in a door. Symptoms include pain, discolouration, nail sensitivity, and separation of the nail plate from the nail bed. Treatment for a subungual hematoma involves relieving pressure by draining the blood.
Ridges
Horizontal ridges or dents in the nails are usually due to a condition called Beau's lines, which can be caused by chemotherapy, injury to the nail, severe illness, or nutritional deficiencies. Vertical nail ridges can be caused by iron deficiency. Ridges may be treated by addressing the underlying cause, and by applying moisturiser to the nails and cuticles daily.
Discolouration
Discolouration of the nail can be a symptom of subungual hematoma (bruising under the nail), which can cause the nail to appear black-and-blue, black-and-purple, or blue. Discolouration can also be a symptom of subungual melanoma, a rare form of skin cancer that affects the nail matrix. Any colour changes in a single nail should be medically evaluated.
Nail Loss
Nail loss can occur due to tearing or ripping, such as stubbing a toe or catching a fingernail on an object. Repeated trauma to toenails, caused by ill-fitting shoes, can also lead to nail loss. Nails will usually regrow after being lost, although it may take several weeks for the new nail to appear.
Dip Nails: Fixing Grown-Out Manicures
You may want to see also
Explore related products
Nail health: Nails can indicate overall health
Healthy nails are smooth with no discolouration. They are protective plates found at the tip of the digits (fingers and toes) of primates, corresponding to the claws in other tetrapod animals. Nails are made of a tough, rigid protein called alpha-keratin, a polymer also found in the claws, hooves, and horns of vertebrates.
Nails can indicate a lot about your overall health. They can provide clues about your nutritional intake, as well as indicate certain vitamin deficiencies and chronic conditions. For example, brittle nails can be a sign of hypothyroidism or iron deficiency. Discolouration, thinning, thickening, brittleness, splitting, grooves, small white spots, clubbing, and spooning (concave) can indicate illness in other areas of the body, nutrient deficiencies, drug reactions, poisoning, or local injury.
Nail growth records can also show the history of recent health and physiological imbalances and have been used as a diagnostic tool since ancient times. Horizontal ridges, also known as Beau's lines, may be a sign of kidney disease or another underlying condition. They can also be caused by a serious health event, such as a heart attack, illness, or chemotherapy. Vertical ridges, on the other hand, are generally not a cause for concern unless accompanied by other symptoms.
Certain medications and health conditions can also affect nail health and appearance. For example, melanoma cancer can occur when melanocytes grow in the nail bed. Additionally, changes in the shape of your nails, such as thick, bumpy, or pitted nails, can reflect serious issues, including heart disease and lung problems.
It's important to note that not all nail changes are indicative of a serious health issue. Some changes may occur due to normal ageing, cosmetics, or repeated exposure to water. Consulting a doctor or dermatologist is always recommended if you have any concerns about your nail health.
How Curved Nails Affect Our Dogs' Health
You may want to see also
Explore related products
Nail care: Tips for maintaining healthy nails
Nails are made of a tough rigid protein called alpha-keratin, which is also found in the claws, hooves, and horns of vertebrates. They are protective plates found at the tip of the digits (fingers and toes) of primates. Nails are constantly growing, but their growth rate slows down due to poor circulation and aging. The average growth rate of fingernails is about 3 to 3.5 millimeters per month, while toenails grow at about half that rate.
Keep them clean and dry
Bacteria and fungi thrive in a moist environment. By maintaining clean, dry nails, you prevent bacteria from growing underneath your nails. Wash your hands regularly and keep your nails away from constant water exposure, as it can weaken them, causing them to split, peel, or break.
Trim and file regularly
Consistent trims are important for nail health. Trim your nails straight across with sharp nail scissors or clippers every two weeks, adjusting the frequency according to how your nails respond. File your nails in one direction with a glass nail file, which creates an even edge and can be used on weak, brittle, and damaged nails.
Take care of your cuticles
The cuticle seals the area at the base of the nail. Do not remove your cuticles as it can damage your nails. Instead, push them back gently once a week after showering when the skin is soft, and finish by massaging your cuticles and nails with a cuticle oil or treatment.
Protect your nails
Avoid using your nails as tools, such as opening cans, as it can cause chipping, splitting, or lifting of the nail bed. Keep your nails shaped and free of snags by filing them regularly. If your job or workout routine exposes your nails to potential damage, keep a nail file handy for on-the-spot buffing of any rough edges.
Seek professional help
If your nails change colour, swell, or cause pain, see a dermatologist as these can be signs of serious nail problems. Nails can provide information about your overall health, and certain health conditions can affect your nail health.
Natural Nail Growth: Olive Oil and Garlic Treatment
You may want to see also
Frequently asked questions
Your nail matrix is the “factory” where your body makes new fingernails and toenails. It is the root of your nail, and new cells form here.
If your nail falls off, 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, while a toenail will take about 12 months.
Nails can fall off due to trauma, fungal infections, or other reasons. Trauma includes stubbing your toe, dropping something on your foot, or having long fingernails that get hit or jammed.
Keep the wound dry and covered. Clean and dry your nail bed daily and cover it with a bandage. Change the bandage once a day and apply an antibiotic ointment to prevent infection.
In most cases, your nail will grow back. However, severe damage to the nail matrix or nail bed can cause permanent deformities or prevent the nail from growing back entirely.
