
If you've ever noticed excessive skin growth under your nails, you may be experiencing a condition called hyponychium. This occurs when the skin attaches to the underside of the nail as it grows and can be caused by various factors, including long nails, gel or acrylic nails, contact dermatitis, or nail injuries. Onycholysis, or nail separation, is another condition where the nail lifts from its nail bed, which can be due to injury or fungi. Additionally, nail changes such as discoloration, ridges, and pitting can indicate underlying health issues. It is important to consult a dermatologist or healthcare provider for a proper diagnosis and treatment plan.
| Characteristics | Values |
|---|---|
| Excessive skin growth under nails | Hyponychium |
| Cause of Hyponychium | The hyponychium attaches to the underside of the nail as it grows. It could be genetic, wearing long nails with gel or acrylic nails for too long, contact dermatitis, or a nail injury. |
| Treatment | Keep nails short, use a cuticle pusher instead of cutting the skin, use builder gel instead of gel manicures, trim toenails straight across, trim fingernails with a slight curve at the edges, avoid biting nails, be careful when cleaning underneath nails, avoid nail products that can irritate the nails or surrounding skin, wear gloves during activities that may damage nails. |
| Other nail issues | Onycholysis (nail separation), subungual melanoma, nail matrix damage, eczema, psoriasis, yellow nail syndrome, pitted nails, washboard nails, clubbing, spoon-shaped nails, nail infections. |
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What You'll Learn
- The hyponychium is a piece of skin that attaches to the underside of the nail as it grows
- Long nails can cause the skin to grow and it can be painful if it grows past the fingertip
- Nail injuries can cause nails to grow slowly or stop growing
- Onycholysis is when your nail separates from its nail bed, often appearing after an injury
- Skin growth under the nails can be caused by wearing long gel or acrylic nails

The hyponychium is a piece of skin that attaches to the underside of the nail as it grows
The hyponychium is a piece of skin located near the fingertip, just under the free edge of the nail plate. It forms a tight seal that acts as a barrier to protect the nail unit from harmful bacteria, allergens, and pathogens. This protective seal is crucial for maintaining the overall health and integrity of the nail unit.
The hyponychium is usually beneficial, but it can become problematic if it overgrows, leading to discomfort or pain. This overgrowth can occur when the hyponychium attaches to the underside of the nail as it grows, a condition known as pterygium inversum unguis (PIU). PIU is an uncommon condition but a common cause of skin overgrowth under the fingernail.
There are several factors that can contribute to hyponychium overgrowth. One factor is the application of gel manicures, acrylic nails, or nail products that may contain irritating chemicals. Nail injuries, nail psoriasis, and fungal infections can also lead to the accumulation of skin cells under the fingernails.
To address hyponychium overgrowth, it is not recommended to cut or push back the hyponychium as this can introduce infections. Instead, maintaining good nail hygiene by regularly cleaning the nail area and avoiding activities that may cause trauma to the hyponychium are crucial for its integrity. If you are concerned about overgrowth, consulting a doctor for an evaluation is advisable.
In some cases, switching from gel manicures to builder gel or BIAB nails can help reduce hyponychium overgrowth. This product adds a layer of support on the nail and may lead to the recession of the elongated hyponychium. Keeping nails short can also help manage the condition and prevent discomfort during everyday activities.
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Long nails can cause the skin to grow and it can be painful if it grows past the fingertip
Long nails can trap and protect the skin underneath, allowing it to grow. This skin is called the hyponychium, and it is located just beyond the distal end of your nail bed, near your fingertip. It acts as a barrier to protect your nails from infection.
The hyponychium can thicken and overgrow, causing discomfort and pain, especially when trimming nails. This overgrowth can occur when the hyponychium attaches to the underside of the nail as it grows, a condition known as pterygium inversum unguis (PIU). PIU is uncommon, but it can be present from birth or acquired later, often associated with autoimmune conditions such as lupus.
Additionally, long nails can increase the likelihood of onycholysis, which is the separation of the nail from its nail bed. Onycholysis can be caused by various factors, including injury to the nail, fungi, and certain nail products. Keeping nails short can help prevent onycholysis by reducing the chances of nails catching on objects and pulling away from the nail bed.
To manage hyponychium overgrowth, it is recommended to keep nails short, use cuticle oil or a cuticle remover to soften the thickened skin, and consider taking a break from manicures to allow the skin to recede. If the overgrowth is due to underlying conditions such as nail psoriasis or fungal infections, it is advised to consult a dermatologist for appropriate treatment.
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Nail injuries can cause nails to grow slowly or stop growing
Nail injuries can cause nails to grow slowly or even stop growing. There are five categories of nail injuries, including subungual haematoma (a collection of blood under the nail), nail laceration, and fingertip amputation. Subungual haematomas are usually caused by direct trauma to the nail, such as a blow to the nail or closing a finger in a door. They can result in intense pain and discolouration of the nail.
Nail injuries can have various effects on nail growth. Minor nail bed injuries often heal on their own, and new nail growth will occur over time. However, severe injuries, especially those involving the nail matrix (the tissue inside the cuticle where new nail growth originates), can cause permanent cosmetic changes. In some cases, the nail may stop growing or grow back with ridges or bumps.
The recovery time for nail injuries depends on the severity and type of injury. Minor injuries may only require home care, while more severe injuries may need medical attention to ensure proper healing and smooth nail growth. Full recovery can take anywhere from two to four months for fingernails and up to 12 to 18 months for toenails.
To promote nail health and reduce the risk of injuries, it is important to keep nails trimmed and maintain proper nail care practices. Avoiding nail biting and cuticle biting is essential, as these habits can cause trauma to the nails and increase the risk of infection. Additionally, wearing properly sized shoes and taking precautions when using sharp objects or machinery can help prevent nail injuries.
In some cases, skin growth under the nails, known as hyponychium, can occur due to nail injuries or other factors such as genetics or the use of gel or acrylic nails. This condition can cause discomfort and thick skin under the nails. Proper nail care and maintenance can help manage hyponychium and improve nail health.
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Onycholysis is when your nail separates from its nail bed, often appearing after an injury
Onycholysis is a condition where the nail separates from the nail bed, the skin on which the nail rests. It is characterised by discoloured nails or a wavy white line on the nail. Onycholysis typically affects a single nail and may be caused by an injury to the nail, fungi, or certain health conditions.
The treatment for onycholysis involves cutting away the separated nail as it grows out. In some cases, antifungal medications or discontinuing the use of certain nail products may be necessary. While there is no cure for the detached section of the nail, treatment can help keep new nail growth attached to the nail bed.
To prevent onycholysis, it is recommended to keep nails trimmed short to avoid catching on objects and minimise the risk of pulling the nail off the nail bed. Biting nails should be avoided, and caution should be exercised when cleaning underneath the nails to prevent breaking the skin and causing infections. Avoiding chemicals and products that irritate the nails or surrounding skin, such as nail polish, nail gloss, nail hardener, nail polish remover, and fake nails, is also advised. Wearing gloves during activities that may damage nails, such as washing dishes, playing sports, or working outdoors, can provide additional protection.
It is important to note that onycholysis is not the only condition that can affect the nails. Other nail changes that may require examination by a dermatologist include washboard nails (onychotillomania), clubbing, spoon-shaped nails (koilonychia), and yellow nail syndrome. These conditions can be indicative of underlying issues, such as nail-picking habits, diseases, circulation problems, or iron deficiencies. Therefore, it is essential to consult a healthcare professional for a proper diagnosis and treatment plan.
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Skin growth under the nails can be caused by wearing long gel or acrylic nails
Skin growth under the nails, known as hyponychium, can be caused by various factors, including long gel or acrylic nails. The hyponychium is the thick skin located just under the free edge of the nail tip and acts as a barrier to protect against germs and debris. While it typically attaches to the underside of the nail as it grows, certain factors can cause it to overgrow and thicken.
One of the main causes of hyponychium overgrowth is the prolonged use of gel or acrylic nails, which can lead to keratin debris buildup. This buildup can result in the white and thin appearance of the nails, as well as nail thinning due to the gel removal process weakening the natural nail. Therefore, it is recommended to take breaks between gel manicures to allow the natural nails to recover.
Additionally, the length of the nails plays a role in hyponychium growth. Long nails provide a protective cover for the skin underneath, allowing it to grow without being worn down by daily activities. As a result, the hyponychium may extend further than the nail itself, making it challenging to trim the nails without causing discomfort or injury to the hyponychium.
To manage hyponychium overgrowth caused by long gel or acrylic nails, it is advisable to switch to regular manicures or builder gel (BIAB nails) that provide support without causing the hyponychium to elongate. Applying cuticle oil or hand cream can also help keep the skin and nails healthy by moisturising the area. It is important to avoid cutting the skin in this region, as it can increase sensitivity and cause pain. Instead, gently pushing back the hyponychium with a cuticle pusher after showering may help reduce its growth.
In some cases, hyponychium overgrowth may be caused by other factors, such as nail biting, contact dermatitis, nail injury, or genetic predisposition. If the skin appears discoloured, painful, bleeding, or swollen, it is recommended to consult a dermatologist for further evaluation and treatment.
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Frequently asked questions
Excessive skin growth under your nails could be the result of an overgrown hyponychium. This is the part of your nail anatomy that secures the edge of your nail to the plate and is located near the fingertip.
According to manicurist Brittney Boyce, there are three main causes of an overgrown hyponychium. The first is genetic. The second is wearing your nails too long with gel or acrylic nails for too long. The third is contact dermatitis or a nail injury.
You can try clipping the dead part very carefully, but this is not recommended as it could cause pain or infection. Instead, keep your nails short, and the skin will recede by itself over time.
If you keep your nails short, you can "train" the hyponychium back. You can also switch from gel manicures to builder gel, which adds a layer on top of the nail and is considered safer.











































