
Have you ever noticed skin growing under your nails? This is called the hyponychium, which is the tissue under the free edge of the nail that seals the nail plate to the tip of the finger. The hyponychium can sometimes overgrow and thicken, which can be uncomfortable and unsightly. This overgrowth can be caused by a variety of factors, including long nails, gel or acrylic nails, contact dermatitis, or nail injury. Additionally, certain health conditions such as psoriasis and eczema can also lead to cuticle overgrowth. Proper nail care is essential to prevent and manage this issue, and in some cases, it may be necessary to consult a dermatologist or medical professional for advice and treatment.
| Characteristics | Values |
|---|---|
| Skin growth under nails | Hyponychium |
| Hyponychium location | Under the free edge of the nail, near the fingertip |
| Hyponychium function | Acts as a barrier from germs and debris, preventing infection |
| Hyponychium overgrowth causes | Genetic factors, long artificial nails, contact dermatitis, nail injury, psoriasis, eczema, chronic stress, or unknown |
| Hyponychium overgrowth treatment | Antifungal medication, cuticle oil, builder gel manicures, gently pushing back cuticles |
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What You'll Learn
- The hyponychium is the skin under the free edge of your nail
- Pterygium inversum unguis (PIU) is an uncommon condition causing skin overgrowth under the nail
- Gel manicures can cause skin overgrowth
- Cuticle overgrowth is usually harmless but can lead to other issues
- Chronic stress can cause unusual skin and nail growth

The hyponychium is the skin under the free edge of your nail
However, the hyponychium can sometimes overgrow and become thicker, which can be uncomfortable and unsightly. This can make trimming nails painful, and increase the risk of infection. Pterygium inversum unguis (PIU) is an uncommon condition where the hyponychium attaches to the underside of the nail as it grows, causing skin overgrowth. It can be present from birth or acquired later, with the latter often associated with autoimmune conditions such as lupus, or triggered by external factors like psoriasis, nail injury, or exposure to certain chemicals.
If you experience hyponychium overgrowth, it is recommended to consult a dermatologist for evaluation and treatment. Cutting the skin in this area is not advised as it can increase sensitivity and cause pain. Instead, softening the thickened skin with cuticle oil or a cuticle remover is suggested, along with gently pushing it back after showering. In some cases, switching to builder gel manicures or regular manicures instead of gel or acrylic nails may help reduce the growth.
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Pterygium inversum unguis (PIU) is an uncommon condition causing skin overgrowth under the nail
The hyponychium is the thick skin under the nail tip that acts as a protective barrier from germs and debris. However, it can become overgrown and affect one, some, or all the fingers. Pterygium inversum unguis (PIU) is an uncommon condition where the hyponychium attaches to the underside of the nail as it grows, leading to skin overgrowth under the nail.
PIU is a rare nail abnormality that can be congenital or acquired. The exact origin of this disorder is unknown, but it is believed to be caused by the distal nail bed adhering to the ventral surface of the nail plate, resulting in a subungual extension of the hyponychium and the loss of nail grooves. While it can be present from birth, it is also commonly associated with autoimmune conditions such as lupus and external factors like psoriasis, a skin condition characterised by rapid skin cell growth.
The management of PIU is not well-defined, and various treatments, including keratolytics, topical steroids, and surgical excision, have been reported as ineffective. The most effective approach is treating the underlying cause of PIU. Patients exhibiting this condition should be evaluated for associated rheumatologic diseases, and long-term follow-up examinations are necessary to detect the development of connective tissue diseases.
Overgrown hyponychium can be caused by various factors, including long nails, gel or acrylic nails, contact dermatitis, and nail injuries. It can also be triggered by chemicals in gel manicures, although this is not yet proven. To address overgrown hyponychium, it is recommended to avoid cutting the skin and instead soften it with cuticle oil. If the skin is discoloured, painful, bleeding, or smelly, it is advised to consult a dermatologist.
It is important to note that any changes in nail colour, texture, or shape may indicate an underlying disease, and it is recommended to seek the opinion of a board-certified dermatologist for proper diagnosis and treatment.
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Gel manicures can cause skin overgrowth
Skin growing along with nails is known as hyponychium overgrowth. The hyponychium is the tissue under the free edge of the nail that seals the nail plate to the tip of the finger. It acts as a barrier from germs and debris and contains white blood cells to help prevent infection. However, the hyponychium can sometimes overgrow and thicken, causing discomfort and making nail trimming painful.
Gel manicures have been associated with hyponychium overgrowth. The use of builder gel on top of the nail plate can lead to the elongation of the hyponychium. Additionally, the repeated application of gel manicures can increase the risk of skin cancer and premature skin ageing on the hands due to exposure to ultraviolet (UV) radiation from curing lamps. The UV rays emitted by these lamps are known to play a significant role in the development of cancer. While the risk is considered low, the cumulative effect of multiple manicures may result in DNA damage and increased vulnerability to skin cancer.
To mitigate the risk of hyponychium overgrowth caused by gel manicures, it is recommended to use builder gel that offers support and can lead to the recession of the elongated hyponychium. Additionally, it is advised to avoid cutting the skin in this area as it can increase sensitivity and cause pain. If the skin is not discoloured, painful, bleeding, or emitting a foul odour, it can be softened at home. However, if there are any concerns, it is recommended to consult a dermatologist.
Furthermore, to minimise the potential risks associated with UV radiation exposure during gel manicures, it is suggested to apply a broad-spectrum, water-resistant sunscreen with an SPF of 30 or higher to the hands before the procedure. Alternatively, wearing fingerless gloves or dark, opaque gloves with the fingertips snipped off can provide protection while still allowing access for the manicure. These precautions are crucial, especially for individuals with a history of skin cancer or a family predisposition.
While gel manicures can enhance the appearance and longevity of nail polish, it is important to be aware of the potential side effects, such as hyponychium overgrowth and increased exposure to UV radiation. By taking the necessary precautions and seeking professional advice when needed, individuals can enjoy gel manicures while minimising the risks associated with them.
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Cuticle overgrowth is usually harmless but can lead to other issues
Cuticle overgrowth is usually harmless, but it can lead to other issues if left unmanaged. When cuticles grow beyond the proximal fold, they are considered overgrown. Overgrown cuticles can cause your cuticles to split, allowing bacteria and dirt to enter your nail bed and trigger an infection. This may cause pain, redness, discolouration, and swelling.
There are several causes of overgrown cuticles. One of the most common reasons is neglecting proper nail care. Poor nail care causes cuticles to grow beyond the proximal fold. Other causes include frequent exposure to water, harsh chemicals, and nail trauma. Chronic stress can also cause overgrown cuticles, as it affects the skin, hair, and nails.
Some people are genetically predisposed to overgrown cuticles. Certain health conditions can also cause cuticles to overgrow, including psoriasis, eczema, and allergic contact dermatitis.
To treat overgrown cuticles, it is recommended to never cut or remove them. Instead, gently push them back with a cuticle stick or orangewood stick after moisturising. This helps maintain the natural shape of your nails and prevents overgrowth. You can also apply a few drops of olive oil, cuticle oil, or essential oil to your nails and cuticles.
If you notice persistent nail problems or changes in your nails, it is important to consult a dermatologist or healthcare professional for a proper evaluation.
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Chronic stress can cause unusual skin and nail growth
Skin growth under the nails is known as hyponychium. It is the skin just under the free edge of the nail, located near the fingertip. An overgrown hyponychium can cause discomfort while trimming nails. Pterygium inversum unguis (PIU) is an uncommon condition where the hyponychium attaches to the underside of the nail as it grows, leading to skin overgrowth under the fingernail.
Chronic stress can have a significant impact on skin and nail health. The body's stress response, known as the "fight or flight" response, prioritizes physical preparation to deal with stressors over the growth, maintenance, and repair of other tissues, including the skin and nails. Chronic stress increases the level of the hormone cortisol, which negatively affects tissue health by redirecting resources like nutrients and oxygen away from the skin and towards the muscles. This results in reduced nutrient supply to the skin and nails, hindering their growth and repair.
Additionally, stress can cause increased inflammation, slow wound healing, and negatively impact existing skin conditions. It can trigger skin conditions like acne, eczema, and psoriasis to flare up, leading to unusual skin changes. Stress also interferes with the body's cellular repair mechanisms, resulting in increased lines, wrinkles, and skin ageing.
Stress can further affect nail health by influencing nail-related habits. During periods of extreme stress, individuals may develop nervous habits such as nail-biting, cuticle picking, or thumbnail rubbing, which can cause nail distortion, raised ridges, and nailbed infections.
To mitigate the effects of chronic stress on skin and nail health, it is crucial to manage stress levels through mind-body practices such as meditation, acupuncture, and nutritional support. Seeking professional help from a dermatologist or other healthcare providers can also aid in treating stress-related skin and nail issues.
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Frequently asked questions
The hyponychium is the skin just under the free edge of your nail. It acts as a barrier to protect your nails from infection. However, it can become a problem if it overgrows, which can be painful and may increase the chance of infection.
Pterygium inversum unguis (PIU) is an uncommon condition but a common cause of skin overgrowth under the fingernail. It occurs when the hyponychium attaches to the underside of the nail as it grows. It can be present from birth or acquired later, with the acquired form most commonly associated with autoimmune conditions such as lupus.
Other factors that can contribute to hyponychium overgrowth include wearing long gel or acrylic nails for extended periods, contact dermatitis, or nail injury. Neglecting proper nail care and chronic stress can also lead to cuticle overgrowth, which can further contribute to hyponychium overgrowth.
If you're experiencing discomfort or pain due to hyponychium overgrowth, it is recommended to consult a dermatologist. They can determine the best treatment based on your specific symptoms. In some cases, antifungal medication or cuticle oil may be suggested to soften the thickened skin.
While it is important to seek professional advice, you can try using a builder gel on top of the nail plate to support the hyponychium and promote its recession. Gently pushing back your cuticles can also help stop and prevent cuticles from growing on top of the nail bed.






































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