Caleb Foster
As we age, our bodies undergo various changes, and one of the most noticeable signs of ageing is the appearance of wrinkles and the slowing of nail growth. Wrinkles are the folds, ridges, and creases that naturally form on the skin as collagen production slows and the skin loses its elasticity. On the other hand, nails grow at an average rate of about 0.1 millimetres daily or 3.47 millimetres per month, but this can be slower for those with certain medical conditions or during winter when nails tend to crack and split more easily. Understanding the causes of wrinkles and slow nail growth is essential for developing effective skincare and nail care routines.
Characteristics and values of what causes wrinkles and finger nails
| Characteristics | Values |
|---|---|
| Wrinkles | Ageing, sun exposure, repetitive facial movements, genetics, smoking, alcohol, lack of sleep, decrease in collagen production, decrease in sebum production, dehydration, pollution, oxidative stress |
| Finger nails | Disease, thyroid disease, injury, fungal infection, psoriasis, lung disease, rheumatoid arthritis, iron deficiency, chemotherapy, major stress, family history, circulation problems |
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What You'll Learn
- Repeated facial movements, such as smiling, frowning, and squinting, create wrinkles
- Loss of collagen and elastin in the dermis layer of skin leads to wrinkles
- Fingernails can lift up due to injury or infection, requiring a dermatologist's examination
- Pitted nails could indicate a disease affecting the entire body and require a dermatologist's diagnosis
- Spoon-shaped nails are often a sign of iron deficiency or inflammatory skin diseases
Repeated facial movements, such as smiling, frowning, and squinting, create wrinkles
While there are many factors that contribute to the development of wrinkles and the ageing of fingernails, repeated facial movements, such as smiling, frowning, and squinting, are a key cause of wrinkles. Over time, the muscles that are used to produce these expressions start to remain in a contracted position, even when the face is at rest. This constant muscle contraction causes the overlying skin to fold and crease, leading to the formation of wrinkles.
The wrinkles caused by facial expressions usually appear on the parts of the face that are most active when expressing emotions. For example, frowning intensely or frequently can lead to the development of "11" lines between the eyebrows, while repeated smiling can cause crow's feet at the corners of the eyes. Similarly, squinting can cause wrinkles around the eyes and on the bridge of the nose, as the muscles around the eyes contract to reduce the amount of light entering the eyes.
The likelihood of developing wrinkles due to facial expressions is influenced by several factors, including age, skin type, and genetics. As we grow older, our skin loses its elasticity, making it less able to spring back from the stretched position and increasing the likelihood of wrinkles forming. Additionally, individuals with certain skin types, such as dry skin, may be more prone to developing wrinkles due to reduced skin elasticity.
Genetics also play a significant role in determining the likelihood of developing wrinkles due to repeated facial expressions. Some people may inherit genes that predispose them to having more expressive facial muscles or thinner skin, both of which can contribute to the formation of wrinkles.
While the occurrence of wrinkles due to repeated facial movements is a natural and inevitable part of ageing, there are some measures that can be taken to minimise their appearance. These include protecting the skin from sun damage, maintaining a healthy diet, and staying adequately hydrated. Additionally, certain cosmetic procedures, such as Botox injections, can be used to temporarily relax the muscles and reduce the appearance of wrinkles.
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Loss of collagen and elastin in the dermis layer of skin leads to wrinkles
Skin ageing is a natural process that is inevitable. As we age, the skin's outer layer, or epidermis, thins, and the number of pigment-containing cells decreases, giving aged skin a thinner, paler, and clearer look. The blood vessels in the dermis, or middle layer of the skin, become more fragile, and the skin loses some of its protective fat layer. The skin also produces less collagen and elastin, two proteins that work together in the connective tissue to give the skin strength, flexibility, and resilience.
Collagen fibres make up 90% of the skin, while elastin makes up 10%. Elastin is found in the dermis layer of the skin, and it is what allows the skin to stretch and return to its original shape. For example, when you smile or eat, your skin stretches and bounces back, thanks to elastin. Elastin is also found in vital tissues like blood vessels and the lungs. As we age, the collagen and elastin in our bodies deteriorate, leaving our skin less firm and youthful. The environment can also play a role in the degradation of elastin, as UV rays from the sun can damage it.
The reduction in collagen and elastin leads to a decrease in the skin's strength and elasticity, resulting in wrinkles and sagging skin. This condition is known as elastosis and is more noticeable in areas exposed to the sun. Elastosis gives the skin a leathery, weather-beaten appearance, often seen in people who spend a lot of time outdoors, such as farmers and sailors.
The loss of collagen and elastin also affects the function of dermal fibroblasts, which are responsible for producing collagen and maintaining the skin's structure. Aged fibroblasts produce more ROS (reactive oxygen species), which create a positive feedback loop that accelerates dermal ageing. This leads to a further decrease in collagen and elastin, resulting in a reduction in the amount of functional dermal components and the emergence of clinical ageing features such as wrinkles and reduced skin elasticity.
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Fingernails can lift up due to injury or infection, requiring a dermatologist's examination
Fingernails are made up of a hard protein called keratin that usually lie flat against the nail bed, a layer of skin that lies just beneath the nail. However, in some cases, the fingernail may lift up from the nail bed, a condition known as onycholysis. While onycholysis usually isn't painful, the underlying cause may be irritating or painful.
Onycholysis can be caused by injury or trauma to the nail or the nail matrix, which is the area where the nails start to grow. This can occur due to several reasons, such as bumping or hitting your nails, wearing ill-fitting shoes, or even prolonged exposure to water. Regular manicures and forceful trimming, buffing, or polishing of the nails can also lead to onycholysis. Additionally, fungal infections can cause onycholysis. Fungi can enter through cracks or cuts in your fingers, leading to nail separation. Certain chemicals in nail products, such as nail polish, nail gloss, nail hardener, and artificial nails, can also contribute to onycholysis.
In some cases, onycholysis may be a sign of an underlying medical condition. It has been associated with conditions such as eczema, psoriasis, lichen planus, thyroid disease, and even certain forms of cancer. Pregnant individuals are also more susceptible to onycholysis. Therefore, it is crucial to consult a dermatologist or a healthcare provider to determine the underlying cause and receive appropriate treatment.
When examining fingernail changes, a dermatologist will typically ask about any other symptoms you may be experiencing. They may order urine and blood tests to check for kidney disease, diabetes, or nutritional deficiencies. If a bacterial or fungal infection is suspected, the dermatologist may prescribe appropriate antibacterial or antifungal treatments. In some cases, they may also take fingernail clippings for laboratory analysis to confirm the presence of an infection.
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Pitted nails could indicate a disease affecting the entire body and require a dermatologist's diagnosis
Pitting in the nails, which appears as small depressions or dimples in the nail plate, could indicate an underlying disease affecting the entire body. While it is a normal variant in infants, it usually corrects itself within the first few years of life. In adults, nail pitting is often associated with nail psoriasis, affecting 10 to 50 percent of patients with this disorder. It is caused by defective layering of the superficial nail plate by the proximal nail matrix, which is responsible for the superficial layers of the nail plate.
Pitting of the nails can also be caused by a variety of other systemic diseases and conditions. These include connective tissue disorders such as Reiter's syndrome and osteoarthritis, autoimmune conditions such as alopecia areata, sarcoidosis, and pemphigus vulgaris, and incontinentia pigmenti, a genetic disorder affecting the hair, skin, nails, teeth, and central nervous system. Localized dermatitis, such as atopic or chemical dermatitis, can also cause nail pitting by disrupting the orderly growth of the nail plate.
It is important to consult a dermatologist or a doctor if you notice pitting in your nails, as they can assess your medical history, perform a physical examination, and guide you through the treatment process. Treatment for nail pitting can be challenging due to the formation of pits during nail growth, and it often involves a long-term approach. Doctors may recommend corticosteroid injections, phototherapy, or immunosuppressant medications.
While nail abnormalities can provide clues to underlying systemic diseases, it is important to note that not all nail changes are indicative of a serious medical problem. For example, slight vertical ridges in the fingernails are commonly associated with aging and are usually harmless. However, deep horizontal ridges, known as Beau's lines, may suggest previous severe illness, trauma, exposure to cold temperatures, or underlying conditions such as diabetes or malnutrition.
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Spoon-shaped nails are often a sign of iron deficiency or inflammatory skin diseases
Spoon-shaped nails, or koilonychia, are characterised by thin, brittle, concave nail dystrophy either placed horizontally or vertically, where the finger or toenail plate seems to be centrally depressed and everted laterally. This condition can be a sign of iron deficiency, with some sources stating that it is primarily considered to be a manifestation of chronic iron deficiency anaemia. In addition, people with certain dietary preferences or lifestyles are more likely to have spoon-shaped nails due to the risk of lower iron levels. For example, people who follow a vegetarian or vegan diet or live at high altitudes.
Spoon-shaped nails can also be indicative of inflammatory skin diseases, such as psoriasis, eczema, and Raynaud's disease. In some cases, spoon-shaped nails can be hereditary or congenital. They may also be caused by injury to the nail bed, such as thumb-sucking in babies and toddlers, or wearing shoes that are too tight.
If you notice any changes in your nails, it is important to consult a doctor or dermatologist. They may examine your nails, ask about other symptoms, and order blood tests to determine the underlying cause. Treatment for spoon-shaped nails typically involves addressing the underlying cause, which may include dietary changes or supplements to increase iron levels.
It is worth noting that ridges in fingernails are usually harmless and are typically a sign of ageing. However, they can sometimes indicate health problems like vitamin deficiencies or diabetes. Therefore, it is always a good idea to pay attention to any changes in your nails and seek medical advice if you have any concerns.
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Frequently asked questions
Wrinkles are caused by a variety of factors, some of which are preventable and others that are not. Sun exposure is a major cause of wrinkles, as the ultraviolet rays break down the collagen and elastin fibres in the skin, causing it to lose its resilience and become more susceptible to wrinkling. Other causes include repetitive facial movements, smoking, alcohol consumption, genetics, and pollution.
Wrinkles around the mouth can be caused by repeated muscle movements, such as those made when sipping through a straw or smoking.
Wrinkles on the lower face and cheeks are often caused by extrinsic factors, such as high levels of pollution in the area where you live.
Fingernail discolouration can be caused by various factors, including bacterial infections, diseases that affect the entire body, and certain medications. In some cases, discolouration may be a warning sign of a specific disease.
Fingernails that curve downward can be a harmless trait that runs in families, but it can also indicate an underlying disease. This condition is known as "clubbing" and may be accompanied by swollen fingertips and a spongy feeling when the nails are pressed on.
