Isla Bennett
Flat nail beds can be a sign of a number of nail abnormalities. Nails that are flattened and have concavities could be a sign of koilonychia, which may be associated with iron deficiency. Flat nails can also be caused by prolonged untreated onycholysis, which is when the nail becomes loose and detaches from the nail bed. Other nail abnormalities include ridges, which are tiny raised lines that develop across or up and down the nail, and median nail dystrophy, which gives a lengthwise split or ridged appearance of the thumbnails.
| Characteristics | Values |
|---|---|
| Flat nail beds | An early sign of koilonychia |
| Koilonychia | Nails are flattened and have concavities |
| May be associated with iron deficiency | |
| Disappearing nail bed | Prolonged untreated onycholysis |
| Ridges | Tiny, raised lines that develop across or up and down the nail |
| Crushing the base of the nail or nail bed | May cause a permanent deformity |
| Chronic picking or rubbing of the skin behind the nail | May cause median nail dystrophy |
| Long-term exposure to moisture or nail polish | Nails peel and become brittle |
| Fungus or yeast | Changes in the colour, texture, and shape of the nails |
| Bacterial infection | Change in nail colour or painful areas of infection under the nail or in the surrounding skin |
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What You'll Learn
- Koilonychia: a condition where nails flatten and develop concavities, associated with iron deficiency
- Onycholysis: a condition where the nail becomes loose and may detach from the nail bed
- White nail syndrome: also known as leukonychia, which can occur with arsenic poisoning, heart disease, renal failure, pneumonia or hypoalbuminemia
- Yellow nail syndrome: characterised by yellow nails that lack a cuticle, grow slowly, and are loose or detached
- Median nail dystrophy: caused by chronic picking or rubbing of the skin behind the nail, giving a lengthwise split or ridged appearance of the thumbnails
Koilonychia: a condition where nails flatten and develop concavities, associated with iron deficiency
Flat nail beds can be an early sign of koilonychia, a condition where nails flatten and develop concavities. Koilonychia is associated with iron deficiency and can be easier to spot on fingernails than toenails. Nails with this condition are described as being able to hold a drop of water on top.
Koilonychia is a nail abnormality that can be caused by crushing the base of the nail or the nail bed, which may cause a permanent deformity. The nail bed supports the hard part of the nail as it grows and includes the hyponychium and the onychodermal, layers of tissue that prevent pathogens from infecting the skin underneath the nail plate.
Other nail abnormalities include onycholysis, where the nails become loose and may even detach from the nail bed, and leukonychia, which can occur with arsenic poisoning, heart disease, renal failure, pneumonia, or hypoalbuminemia. Yellow nail syndrome is characterised by yellow nails that lack a cuticle, grow slowly, and are loose or detached. It is most commonly associated with lung disorders and lymphedema.
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Onycholysis: a condition where the nail becomes loose and may detach from the nail bed
Flat nail beds can be an early sign of koilonychia, a condition in which nails are flattened and have concavities. This condition may be associated with iron deficiency. In onycholysis, the nails become loose and may even detach from the nail bed. When not held firmly in place, the nails are rapidly damaged and debris collects beneath them. Onycholysis can lead to a disappearing nail bed, which results from prolonged untreated onycholysis. The nail bed shortens and narrows, and the nail matrix, which is the most visible part of the nail, is affected. This can cause permanent deformity.
Onycholysis can be caused by long-term exposure to moisture or nail polish, which can cause nails to peel and become brittle. Fungus or yeast can also cause changes in nail colour, texture and shape. Bacterial infections may cause a change in nail colour or painful areas of infection under the nail or in the surrounding skin.
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White nail syndrome: also known as leukonychia, which can occur with arsenic poisoning, heart disease, renal failure, pneumonia or hypoalbuminemia
Flat nail beds can be an early sign of koilonychia, a condition in which nails are flattened and have concavities. The nails tend to flatten before developing a concave shape. Koilonychia may be associated with iron deficiency.
White nail syndrome, also known as leukonychia, can occur with arsenic poisoning, heart disease, renal failure, pneumonia or hypoalbuminemia.
Nail abnormalities can be caused by a variety of factors, including bacterial infections, fungus or yeast, and chronic picking or rubbing of the skin behind the nail. In some cases, nail abnormalities may be a sign of an underlying health condition. For example, yellow nail syndrome is most commonly associated with lung disorders and lymphedema.
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Yellow nail syndrome: characterised by yellow nails that lack a cuticle, grow slowly, and are loose or detached
Flat nail beds can be an early sign of koilonychia, a condition in which nails are flattened and have concavities. Koilonychia may be associated with iron deficiency. In onycholysis, the nails become loose and may even detach from the nail bed. When not held firmly in place, the nails are rapidly damaged and debris collects beneath them.
Yellow nail syndrome is characterised by yellow nails that lack a cuticle, grow slowly, and are loose or detached (onycholysis). This syndrome is most commonly associated with lung disorders and lymphedema.
Nail abnormalities can be caused by a variety of factors, including bacterial infections, fungus or yeast, and long-term exposure to moisture or nail polish.
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Median nail dystrophy: caused by chronic picking or rubbing of the skin behind the nail, giving a lengthwise split or ridged appearance of the thumbnails
Flat nail beds can be an early sign of koilonychia, a condition in which nails are flattened and have concavities. This condition may be associated with iron deficiency. In some cases, flat nail beds may be caused by prolonged untreated onycholysis, a condition in which the nail bed shortens and narrows.
One specific type of nail abnormality is median nail dystrophy, which is caused by chronic picking or rubbing of the skin behind the nail. This gives the thumbnails a lengthwise split or ridged appearance. The nail plate is the most visible part of the nail, and the nail bed supports the hard part of the nail as it grows.
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Frequently asked questions
It could be a sign of koilonychia, a condition where the nails are flattened and have concavities.
Nails become concave, and people sometimes describe being able to hold a drop of water on the top of their nail.
It may be associated with iron deficiency.
The nail bed supports the hard part of your nail as it grows. It includes the hyponychium and the onychodermal, which are layers of tissue that prevent pathogens from infecting the skin underneath your nail plate.
Crushing the base of the nail or the nail bed may cause a permanent deformity.
