
Nail problems can be caused by a variety of factors, including vitamin deficiencies, chronic conditions, overexposure to moisture, poor nutrition, poor digestion, and injury. While nail issues are often benign, they can sometimes indicate more serious underlying health issues. For example, spoon-shaped nails that curve inwards can be a sign of iron-deficiency anaemia, while fingernails curving over rounded fingertips can indicate long-term conditions. In this article, we will explore the various causes of nail problems and discuss when to seek medical advice.
| Characteristics | Values |
|---|---|
| Colour | Nails that are discoloured may indicate vitamin deficiencies or chronic conditions. |
| Texture | Rough, splitting nails that crack easily are a common nail problem. |
| Shape | Spoon-shaped nails that curve inwards (koilonychia) can be a sign of iron-deficiency anaemia. |
| Dents | Small dents or pits in your nails can be a sign of nail psoriasis, eczema or alopecia. |
| Lines | Deep lines or grooves across your fingernails (Beau's lines) may happen when you're ill but should grow out. |
| Curving | Fingernails curving over rounded fingertips (clubbing) can be a sign of many serious, long-term conditions. |
| Injury | Nails can become loose and eventually fall off after an injury. |
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What You'll Learn

Nail problems and vitamin deficiencies
Nail problems can be caused by a variety of factors, including vitamin deficiencies and chronic conditions. However, nail issues often occur due to injury or overexposure to moisture. According to Dr. Sara Norris, a naturopathic doctor based in Los Angeles, "For the general population, nail health is most often an indicator of poor nutritional intake or poor digestion".
Some common nail problems include brittle, loose nails that may change colour or shape. Nails can also become harder, softer or more brittle during pregnancy and should be healthier within 6 months of giving birth. Fingernails that fall off after an injury should grow back within 6 months, while toenails can take up to 18 months.
Spoon-shaped nails that curve inwards (koilonychia) can be a sign of iron-deficiency anaemia. Small dents or pits in your nails can be a sign of nail psoriasis, eczema or alopecia. Deep lines or grooves across your fingernails (Beau's lines) may occur when you're ill but should grow out. Fingernails curving over rounded fingertips (clubbing) can be a sign of many serious, long-term conditions.
Healthy nails are considered to be smooth with no discolouration. If there are issues with the texture and colour of your nails, this could be a sign of a vitamin deficiency or other health issue.
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Nail problems and chronic conditions
Nail problems can be indicative of vitamin deficiencies, chronic conditions, poor nutrition or poor digestion. However, nail issues often occur due to injury or overexposure to moisture.
Some common nail problems include brittle, loose nails that may change colour or shape. Nails can become harder, softer or more brittle during pregnancy, and they should be healthier within six months of giving birth. Nails can also change colour, become loose and eventually fall off after an injury. Fingernails that fall off after an injury should grow back within six months, whereas toenails can take up to 18 months.
Some medicines can also cause nail problems, so it's worth checking the side effects of any medicine you're taking. Spoon-shaped nails that curve inwards (koilonychia) can be a sign of iron-deficiency anaemia. Small dents or pits in your nails can be a sign of nail psoriasis, eczema or alopecia. Deep lines or grooves across your fingernails (Beau's lines) may happen when you're ill but should grow out. Fingernails curving over rounded fingertips (clubbing) can be a sign of many serious, long-term conditions.
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Nail problems and medication
Nail problems can be caused by a variety of factors, including injury, overexposure to moisture, vitamin deficiencies, chronic conditions, poor nutrition, and poor digestion. While nail issues are often benign, they can sometimes indicate a more serious underlying health problem.
Some common nail problems include brittle, loose nails that may change colour or shape. Nails can become harder, softer, or more brittle during pregnancy and should return to normal within six months of giving birth. Fingernails that fall off due to injury will typically grow back within six months, while toenails can take up to 18 months.
Certain medications can also cause nail problems. For example, spoon-shaped nails that curve inwards (koilonychia) can be a sign of iron-deficiency anaemia. Small dents or pits in the nails can indicate nail psoriasis, eczema, or alopecia. Deep lines or grooves across the fingernails (Beau's lines) may occur when you're ill but should grow out. Fingernails curving over rounded fingertips (clubbing) can be a sign of serious, long-term conditions.
If you are experiencing nail problems, it is important to consult a healthcare professional, especially if you are concerned about potential side effects from medication. A podiatrist can help diagnose and treat nail issues, and they may refer you to a doctor if necessary. In the meantime, there are some general measures you can take to improve nail health, such as wearing rubber gloves when your hands are in water or when using cleaning products.
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Nail problems and injury
Nail problems can be caused by injury or overexposure to moisture. They can also be an indicator of poor nutritional intake or poor digestion.
Healthy nails are smooth and have consistent colouring. If your nails are rough, splitting, or cracking, this could be a sign of a vitamin deficiency or chronic condition. Spoon-shaped nails that curve inwards (koilonychia) can be a sign of iron-deficiency anaemia. Small dents or pits in your nails can be a sign of nail psoriasis, eczema, or alopecia. Deep lines or grooves across your fingernails (Beau's lines) may happen when you're ill but should grow out. Fingernails curving over rounded fingertips (clubbing) can be a sign of many serious, long-term conditions.
If you have injured your nail, you should cut the injured, loose nail back to where it is still attached so that it does not bend or catch on objects. Nails that fall off after an injury should grow back within six months for fingernails and 18 months for toenails.
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Nail problems and infection
Nail problems can be caused by a variety of factors, including injury, overexposure to moisture, vitamin deficiencies, chronic conditions, poor nutrition, poor digestion, and certain medications. While nail problems often do not indicate a serious underlying illness, they can sometimes be a sign of more serious health issues.
One common nail problem is brittle, loose nails that may change colour or shape. This can be caused by injury, pregnancy, or overexposure to moisture. Fingernails that fall off due to injury should grow back within 6 months, while toenails can take up to 18 months. To prevent further damage, it is recommended to cut injured, loose nails back to where they are still attached and to trim nails straight across the top to avoid ingrown toenails.
Another nail problem is spoon-shaped nails that curve inwards (koilonychia), which can be a sign of iron-deficiency anaemia. Small dents or pits in the nails can indicate nail psoriasis, eczema, or alopecia. Deep lines or grooves across the fingernails (Beau's lines) may occur when you're ill but should grow out.
Fingernails curving over rounded fingertips (clubbing) can be a sign of serious, long-term conditions. If you notice this or any other nail problems, you may be able to refer yourself directly to a podiatrist without seeing a GP.
To maintain nail health, it is important to protect your nails from injury and moisture, ensure proper nutrition and digestion, and be aware of the side effects of any medications you are taking.
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Frequently asked questions
Nail problems can be caused by a number of factors, including vitamin deficiencies, chronic conditions, overexposure to moisture, poor nutrition, poor digestion, and injury.
Spoon-shaped nails that curve inwards (koilonychia) can be a sign of iron-deficiency anaemia. Small dents or pits in your nails can be a sign of nail psoriasis, eczema or alopecia.
If you have nail problems, you might be able to refer yourself directly to a podiatrist without seeing a GP. You should also wear rubber gloves if your hands are often in water or you regularly use cleaning products.









































