Isla Bennett
Dark nails can be caused by a number of factors, from nail biting to more serious health issues. Melanonychia is the term for dark pigmentation of the nails, which can be a natural occurrence in people with dark skin, but can also be caused by increased deposits of melanin. Dark nails can also be caused by trauma, infection or cancer.
| Characteristics | Values |
|---|---|
| Name | Melanonychia |
| Description | Dark pigmentation of the nails |
| Colour | Black or brown |
| Cause | Increased deposits of melanin |
| Cause | Nail injury |
| Cause | Infection |
| Cause | Cancer |
| Cause | Biting or picking off pieces of nail |
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What You'll Learn
- Melanonychia: the medical term for dark nails, which can be caused by increased melanin deposits
- Trauma: dark streaks on nails can be caused by injury or trauma
- Infection: dark nails can be caused by an infection
- Cancer: dark lines on nails can be a sign of cancer
- Melanoma: dark nails could be a sign of melanoma
Melanonychia: the medical term for dark nails, which can be caused by increased melanin deposits
Melanonychia is the medical term for dark nails, which can be caused by increased melanin deposits. Melanonychia can be a natural occurrence in people with dark skin, but it can also indicate health issues. The nail plate is usually semitransparent because of a lack of melanin, the substance responsible for skin pigmentation. However, under some circumstances, melanin can cause nail discolouration, leading to melanonychia. The discolouration can occur in one or more digits and can present as a single dark band or streak or involve the entire nail.
There are many possible causes of melanonychia, so an accurate diagnosis is vital. Dark lines on nails can be caused by nail injury, infection, or cancer, among other causes. A doctor can perform exams to determine whether melanonychia is malignant or cancerous. If it is, the tumour or cancerous area must be removed, which may mean losing all or part of the nail.
The most common dark streaks that occur in nails develop as a result of trauma, known as splinter haemorrhages. These are small black streaks that appear longitudinally in the nail and develop when blood leaks into the space between the nail and the nail bed, getting trapped in the bridges of the skin. Dark nails can also be caused by biting or picking off pieces of nail, which can initially be identified by a black spot or line under the nail.
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Trauma: dark streaks on nails can be caused by injury or trauma
Dark nails, or melanonychia, can be caused by a number of factors. In people with dark skin, melanonychia can occur naturally. However, it can also be caused by injury or trauma. Dark streaks on nails, known as splinter hemorrhages, can occur when blood leaks into the space between the nail and the nail bed, becoming trapped in the skin. This can be caused by biting or picking at the nails, which can initially be identified by a black spot or line under the nail. Melanonychia can also be caused by infection or cancer. It is important to consult a doctor or dermatologist to confirm a diagnosis and monitor the condition, especially if there is a risk of melanoma.
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Infection: dark nails can be caused by an infection
Dark nails can be caused by a number of factors, including infection. The medical term for dark nails is melanonychia, which is characterised by black or brown discolouration of the nail. This can occur in one or more nails and can present as a single dark band or streak, or involve the entire nail.
Infection is one of the causes of melanonychia. Dark lines on the nails can also be caused by nail injury, cancer, or melanoma. Melanonychia may also be a natural occurrence in people with dark skin.
If you notice a dark line on your nail, it is important to consult a doctor or dermatologist to determine the cause. In some cases, dark nails may be an indication of a more serious health issue.
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Cancer: dark lines on nails can be a sign of cancer
Dark lines on nails are called melanonychia. They are usually brown or black and can appear as a single dark band or streak, or involve the entire nail. Melanonychia can be a natural occurrence in people with dark skin, but it can also indicate health issues.
In some cases, dark lines on nails can be a sign of cancer. A doctor can perform exams to determine whether melanonychia is malignant. If it is, the tumour or cancerous area must be removed, which may mean losing all or part of the nail.
Dark lines on nails can also be caused by nail injury, infection, or biting or picking off pieces of nail. These habits can be identified by a black spot or line under the nail that does not increase in size over time and does not cause other symptoms. However, it is still important to consult a dermatologist to confirm a diagnosis and monitor the dark nails, especially if there is a risk for melanoma.
According to Dr. Zeichner, if melanonychia occurs in a single nail and the streak is new, it should be evaluated. The key sign to look for is whether the pigment affects the skin of the cuticle itself. The most common dark streaks that occur in nails develop as a result of trauma, known as splinter hemorrhages. These are small black streaks that appear longitudinally in the nail when blood leaks into the space between the nail and the nail bed.
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Melanoma: dark nails could be a sign of melanoma
Dark nails are called melanonychia, and they can be a natural occurrence in people with dark skin. However, they can also indicate health issues. Melanonychia can be caused by an increase in melanin deposits, which gives skin its colour. Melanonychia can also be caused by nail injury, infection, or cancer. If the dark pigmentation occurs in a single nail and the streak is new, it should be evaluated by a doctor. The key sign to look out for is whether the pigment affects the skin of the cuticle. Small black streaks that appear longitudinally in the nail are known as splinter haemorrhages, which develop when blood leaks into the space between the nail and the nail bed. Melanonychia can be malignant or cancerous, and in these cases, the tumour or cancerous area must be removed, which may mean losing all or part of the nail. A nail biopsy can also cause structural irregularity because it removes a portion of the nail. It is important to consult a dermatologist to confirm a diagnosis and monitor dark nails, especially if there is a risk for melanoma.
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Frequently asked questions
Dark nails are called melanonychia and are usually brown or black stripes that begin at the bottom of the nail bed and continue to the top. Melanonychia can be a natural occurrence in people with dark skin, but it can also indicate health issues.
Melanonychia can occur naturally in people with a dark complexion. It can also be caused by nail injury, infection, or cancer, among other causes.
If you have melanonychia, it is important to consult a dermatologist to confirm a diagnosis and monitor the dark nails, especially if there is a risk for melanoma. A doctor can perform exams to determine whether melanonychia is malignant or cancerous.
A black spot or line under the nail can be caused by biting or picking off pieces of nail. This can be initially identified by a black spot or line that does not increase in size over time and does not cause other symptoms. Targeted treatment is not required, but it is important to avoid these habits to prevent worsening.
