Sophia Delgado
Ridges in your nails are visible lines or dents that can run vertically or horizontally. They can be a sign of a health condition or a previous injury to your nail, but in some cases, they’re harmless. Horizontal ridges are usually due to a condition called Beau’s lines, which can be caused by chemotherapy, damage from using artificial nails, injury, peripheral vascular disease, severe illness, or nutritional deficiencies. Vertical ridges are often a result of the normal ageing process. Dark lines on your nails, known as melanonychia, can be a sign of nail injury, infection, or cancer, among other causes.
| Characteristics | Values |
|---|---|
| Direction | Vertical (up and down) or horizontal (across) |
| Cause | Ageing, injury, infection, cancer, nutritional deficiencies, or certain health conditions |
| Colour | Brown, black, or white |
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What You'll Learn
- Ridges in nails can be a sign of a health condition or a previous injury
- Melanonychia: black or brown lines in your nail
- Horizontal ridges or dents in your nails are usually due to a condition called Beau's lines
- Vertical nail ridges can be caused by iron deficiency
- Melanocytic activation: an increase in the production and deposits of melanin in your nail
Ridges in nails can be a sign of a health condition or a previous injury
Horizontal ridges are usually due to a condition called Beau's lines, which can be caused by chemotherapy, damage from using artificial nails, injury to the nail, peripheral vascular disease, severe illness with a high fever, or nutritional deficiencies. Vertical ridges, on the other hand, can be caused by iron deficiency or normal ageing.
Dark lines on your nails, known as melanonychia, can also be a cause for concern. These lines are usually brown or black and can be a sign of nail injury, infection, or even cancer. If you notice any dark lines on your nails, it is important to consult a doctor as they may be an indication of other health issues.
While ridges in your nails can sometimes be harmless, it is always a good idea to pay attention to any changes in your body and consult a healthcare professional if you have any concerns.
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Melanonychia: black or brown lines in your nail
Ridges in your nails are visible lines or dents that can run vertically or horizontally. They can be a sign of a health condition or a previous injury to your nail, but sometimes they are harmless. For example, they can be caused by normal ageing.
If the lines are brown or black, this is called melanonychia. These lines can occur naturally if you have a dark complexion, but they can also be caused by nail injury, infection, or cancer, among other causes. Melanonychia is also called melanonychia striata or longitudinal melanonychia. It is caused by an increase in the production and deposits of melanin in your nail but not an increase in pigment cells. If your melanonychia is malignant or cancerous, the tumour or cancerous area must be removed. This may mean you lose all or part of your nail.
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Horizontal ridges or dents in your nails are usually due to a condition called Beau's lines
- Chemotherapy
- Damage from using artificial or acrylic nails or getting gel manicures for long periods
- Injury to your nail, such as slamming your finger in a door or dropping something on your foot
- Peripheral vascular disease (PAD)
- Severe illness with a high fever, such as COVID-19, measles or pneumonia
- Certain nutritional deficiencies, such as zinc or iron deficiency
If you notice horizontal ridges or dents in your nails, it is important to see a doctor as they may be a sign of an underlying health condition. While Beau's lines are usually harmless, they can sometimes indicate a more serious issue.
It is important to note that vertical ridges in your nails are typically a normal sign of aging and are not a cause for concern. However, if you notice any changes in your nails that concern you, it is always best to consult a healthcare professional.
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Vertical nail ridges can be caused by iron deficiency
Ridges in your nails are visible lines or dents in your fingernails or toenails. They can run vertically (up and down) or horizontally (across) your nail. Vertical nail ridges, also called longitudinal ridges, can be caused by iron deficiency. Iron deficiency can cause vertical nail ridges and koilonychia (spoon nails).
Iron deficiency is a common cause of vertical nail ridges. This can lead to koilonychia, or spoon nails, where the nails become thin and curved like a spoon. Iron is essential for nail health, and a deficiency can affect the structure and growth of the nails.
There are several other potential causes of vertical nail ridges. One factor is normal ageing; many people develop vertical ridges on their nails as they get older. Certain health conditions and nutrient deficiencies can also contribute to nail ridges. For example, zinc deficiency is associated with Beau's lines, which are horizontal ridges or dents in the nails.
While vertical nail ridges can be harmless in some cases, they can also indicate an underlying health condition or nutrient deficiency. If you notice persistent or pronounced vertical ridges in your nails, it is advisable to consult a healthcare professional. They can assess your nails and determine if any further evaluation or treatment is necessary.
Additionally, it is important to be aware of other nail changes that may indicate more serious conditions. For instance, dark lines on your nails, known as melanonychia, can be a sign of nail injury, infection, or even cancer. Melanonychia typically presents as brown or black stripes that run from the bottom of the nail bed to the top. If you observe such lines, it is recommended to seek medical advice promptly.
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Melanocytic activation: an increase in the production and deposits of melanin in your nail
Ridges in your nails are visible lines or dents that can run vertically or horizontally. They can be a sign of a health condition, a previous injury, or nutrient deficiencies. For example, horizontal ridges are usually due to a condition called Beau's lines, which can be caused by chemotherapy, damage from artificial nails, injury, peripheral vascular disease, severe illness, or nutritional deficiencies.
Dark lines on your nails, known as melanonychia, can be brown or black and usually look like a stripe running from the bottom of your nail bed to the top. They can occur naturally if you have a dark complexion, but they can also be a sign of nail injury, infection, or cancer. Melanonychia is caused by melanocytic activation, which is an increase in the production and deposits of melanin in your nail. Melanin gives skin its colour, but increased deposits can lead to dark stripes on your nails.
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Frequently asked questions
Ridges in your nails can be a sign of a health condition, a previous injury, or nutrient deficiencies.
Horizontal ridges or dents in your nails are usually due to a condition called Beau's lines.
Vertical lines in your nails are called longitudinal ridges.
Melanonychia is the name for the black or brown lines that can appear on your nails. They are usually a stripe that begins at the bottom of your nail bed and continues to the top.
Melanonychia can be caused by an increase in the production and deposits of melanin in your nail. It can also be caused by a nail injury, infection, or cancer.
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