Liam Carter
Nails that grow down are often referred to as flat nails, which can be an early sign of koilonychia. Nails tend to flatten before developing a concave shape. This is when nails become curved down and are convex. There are many reasons why nails may stop growing or grow slowly, including fever, injury, chemotherapy, stress, and nutritional deficiencies.
| Characteristics | Values |
|---|---|
| Concave nails | Koilonychia |
| Ridges in nails | Vertical ridges are a sign of ageing; horizontal ridges can point to malnutrition, serious nail injury, or Beau's lines |
| Nails stop growing | A fever, injury, chemotherapy, or major stress can cause this; it can also be caused by lung disease or rheumatoid arthritis |
| Thick, overgrown nails | Onychogryphosis, or Ram's horn nails, can be caused by psoriasis, ichthyosis, or circulation problems |
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What You'll Learn
- Koilonychia: when nails flatten and become concave, often easier to spot on fingernails
- Beau's lines: deep horizontal grooves in nails, often caused by malnutrition or serious nail injury
- Yellow nail syndrome: nails turn yellow, thicken and stop growing, possibly indicating lung disease or rheumatoid arthritis
- Ridges in nails: vertical ridges are a sign of ageing, while horizontal ridges can be caused by vitamin deficiencies
- Nails stop growing: a gap may appear in the nail, possibly caused by fever, injury, chemotherapy or major stress
Koilonychia: when nails flatten and become concave, often easier to spot on fingernails
Nails that grow down, or become concave, are a sign of koilonychia. Nails tend to flatten before developing this characteristic shape. The changes are often easier to spot on fingernails rather than toenails. People who have a higher risk of koilonychia include those who have recently experienced a fever, injury, chemotherapy, or major stress, as these factors can cause nails to grow slowly or stop growing. Nails that thicken and overgrow are known as Ram's horn nails, and can be caused by a disease such as psoriasis, ichthyosis, or circulation problems.
Ridges in your nails are usually harmless but can mean different things. Vertical ridges are often a sign of ageing, while horizontal ridges can point to issues like malnutrition, serious nail injury, or Beau's lines. According to 2022 research, ridges are usually due to ageing. But they can also be a sign of improper nail care, nail trauma, vitamin deficiencies, or even a more pressing medical condition. Certain nutritional deficiencies can affect your nails. For example, iron deficiency may cause vertical ridges in your nails. Other vitamins that can contribute to the health of your nails include zinc and vitamins A, C, and D.
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Beau's lines: deep horizontal grooves in nails, often caused by malnutrition or serious nail injury
Beau's lines are deep horizontal grooves that run the width of the nail. They are often caused by malnutrition or a serious nail injury. Beau's lines can also be caused by a fever, chemotherapy, or major stress, all of which can cause nails to grow slowly or stop growing. If you cannot think of what may have caused your nails to grow slowly or stop growing, it is recommended that you see your dermatologist or primary care doctor. Once the cause is identified and addressed, nails will often start growing normally again.
Beau's lines are a type of nail change that a dermatologist should examine. They are characterised by deep grooves or gaps that run the width of the nail. These lines indicate that something has slowed or stopped your nails from growing for a period of time. While vertical ridges in nails are often a sign of ageing, horizontal ridges can point to issues like malnutrition or vitamin deficiencies. For example, iron deficiency may cause vertical ridges in your nails, while Beau's lines are associated with a lack of zinc, vitamins A, C, and D.
Yellow nail syndrome is another nail change that can indicate an internal health issue. If your nails turn yellow, thicken, and seem to stop growing, it could be a sign of lung disease or rheumatoid arthritis. You may also have a serious nail infection, which requires treatment.
It is important to note that ridges in nails are usually harmless and are commonly caused by ageing or improper nail care. However, if you are concerned about any changes in your nails, it is always best to consult a healthcare professional. They can help identify and address any underlying causes, and provide guidance on maintaining healthy nails.
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Yellow nail syndrome: nails turn yellow, thicken and stop growing, possibly indicating lung disease or rheumatoid arthritis
Nails that grow down, or concave nails, are a symptom of koilonychia. Nails tend to flatten before developing this characteristic shape. People who have a higher risk of koilonychia include those with a fever, injury, chemotherapy, or major stress.
Yellow nail syndrome is a condition where nails turn yellow, thicken, and stop growing. This could indicate an underlying health issue, such as lung disease or rheumatoid arthritis. It may also be a sign of a serious nail infection, which requires treatment.
Beau lines are deep grooves or gaps that run the width of the nail. These lines indicate that something has slowed or stopped nail growth for a while. Beau's lines can be caused by malnutrition, serious nail injury, or vitamin deficiencies.
If you notice any changes in your nail growth or appearance, it is recommended to consult a dermatologist or primary care doctor. They can help identify and address any underlying causes or health issues.
Ridges in Finger Nails: What Do They Mean?
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Ridges in nails: vertical ridges are a sign of ageing, while horizontal ridges can be caused by vitamin deficiencies
Nails that curve down are known as koilonychia. This condition can be caused by iron deficiency anaemia, which can cause nails to curve upward at the edges, taking on a spoon-like shape.
Ridges in nails are usually harmless, but they can indicate different things. Vertical ridges are often a sign of ageing, while horizontal ridges can be caused by vitamin deficiencies, malnutrition, serious nail injury, or Beau's lines. Beau's lines are deep horizontal ridges that may suggest a serious condition.
According to 2022 research, ridges are usually due to ageing. However, they can also be a sign of improper nail care, nail trauma, or a more pressing medical condition. Nutritional deficiencies associated with fingernail ridges include iron, zinc, and vitamins A, C, and D deficiency. Iron deficiency can cause nails to become thin and brittle and develop vertical ridges. Zinc is a trace mineral that supports many bodily functions, including skin and hair health.
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Nails stop growing: a gap may appear in the nail, possibly caused by fever, injury, chemotherapy or major stress
Nails tend to curve down and be convex. However, when nails flatten and become concave, it is known as koilonychia.
Nails can stop growing for a while, and when this happens, a gap may appear. This can be caused by a fever, injury, chemotherapy, or major stress. It can also be caused by vitamin deficiencies, malnutrition, or a serious nail injury.
If you cannot think of what may have caused your nails to stop growing, it is recommended that you see a dermatologist or primary care doctor. Once the cause is found and removed, nails often start growing normally again.
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Frequently asked questions
Nails growing down is a sign of koilonychia, which is when nails become concave.
The health implications of koilonychia may depend partly on the age of the person who has it.
A fever, injury, chemotherapy, or major stress could be the cause.
Vertical ridges are often a sign of ageing, while horizontal ridges can point to issues like malnutrition, serious nail injury, or Beau's lines.
