Noah Sinclair
Changes in nail colour can be indicative of underlying health issues. Healthy nails are typically translucent, but they may become thinner, more brittle, or change to a paler or whiter colour for a variety of reasons. For example, pale or white nails can indicate anaemia, liver disease, or diabetes. Yellow nails may indicate a fungal infection, lung disease, or rheumatoid arthritis. Bluish nails can be a sign of poor circulation or respiratory issues. A greenish-black discolouration can be a sign of a bacterial infection. A thick black or brown line that runs from the bottom to the tip of the nail might be melanoma. While nail colour changes can be harmless, they can also indicate a more serious medical condition, so it is important to consult a doctor or dermatologist if you notice any changes.
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What You'll Learn
White nails can indicate anaemia, liver disease or diabetes
Changes in nail colour can be harmless, but they can also indicate underlying health issues. It is important to note that while nail discolouration can be a symptom of a disease, it is rarely the first sign.
White nails, specifically, can be indicative of anaemia, liver disease or diabetes. Anaemia is a condition where there is a lack of healthy red blood cells to carry oxygen throughout the body. Pale nails are a common symptom of this condition. Terry's nails, a type of nail discolouration, can also be indicative of liver disease. The nailbeds appear washed out, with a thin reddish-brown strip near the tip. People with Terry's nails don't have a half-moon shape (lunula) near their cuticles. It is important to note that not everyone with white nails has hepatitis.
Other possible causes of white nails include ageing, kidney disease, and congestive heart failure. In some cases, white nails may be caused by medications or a zinc deficiency.
If you notice any changes in the colour, texture, or shape of your nails, it is recommended to consult a doctor or a dermatologist. They can evaluate the appearance of your nails and determine if there are any underlying health concerns.
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Yellow nails can indicate fungal infection, lung disease or rheumatoid arthritis
Changes in nail colour can sometimes indicate underlying health issues. Usually, healthy nails are pink with a white, crescent-shaped half-moon at the base, called the lunula. However, yellow nails can point to a variety of conditions, including fungal infections, lung disease, or rheumatoid arthritis.
Yellow nails, also known as yellow nail syndrome, are a rare nail disorder. The condition is characterised by malformations of the nails, abnormalities of the lungs and airways, and swelling in different parts of the body. This is caused by the buildup of protein-rich fluid (lymph) in the soft layers of tissue under the skin, known as lymphedema. Yellow nail syndrome has been observed with greater frequency in individuals with certain forms of cancer, immunodeficiency syndromes, and nephrotic syndrome, as well as thyroid disease and rheumatoid arthritis. The exact cause of yellow nail syndrome is unknown, but it may be linked to improper circulation, issues with lymphatic drainage, or fluid buildup around the lungs.
Yellow nails can also be indicative of a fungal infection, which is a common type of nail infection. In addition to yellow discolouration, other signs of a fungal nail infection include nail thickening and a slowing or stopping of nail growth. If left untreated, nail infections tend to worsen, so it is important to seek treatment.
If you notice any changes in the colour of your nails, it is important to consult a doctor or a dermatologist, as it could be a sign of an underlying health condition. They will be able to assess your symptoms and provide a diagnosis and appropriate treatment.
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Bluish nails can indicate poor circulation or respiratory issues
Bluish discoloration of the nails, also known as cyanosis, can indicate poor circulation or respiratory issues. Cyanosis occurs when the blood lacks the oxygen it needs to reach the different tissues in the body. This results in a bluish or purplish tone in the skin or membrane below the skin.
There are many possible causes of cyanosis, including heart and lung diseases. For example, chronic obstructive pulmonary disease (COPD), an umbrella term for a group of progressive lung diseases, can cause a blue tinge in the nails. Other potential causes include congenital heart disease, pneumonia, and pulmonary embolism (PE). In the case of PE, a blood clot blocks one of the arteries in the lungs, leading to a life-threatening blockage of blood flow.
Cold weather can also cause temporary poor circulation, as the blood vessels narrow due to reduced temperatures. This physiological response helps maintain the optimal internal temperature of the body. If the blue coloration of the nails is due to cold temperatures, warming the hands should restore normal nail color.
If you notice that your nails have a persistent blue tinge, it is important to seek medical advice. Bluish nails can be a sign of an underlying health condition, and a doctor can help determine the cause and recommend appropriate treatment.
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Greenish-black nails can indicate bacterial infection
The human body can reveal a lot about its inner workings, and nails are no exception. While nails are usually thought of as dead cells, they are actually made of a tough protective protein called keratin, produced by living skin cells.
Healthy nails are typically pink with a white half-moon shape at the base, known as the lunula. This indicates good blood circulation and overall nail health. However, when nails deviate from this normal colour, it can be a warning sign of an underlying health issue. For example, pale or white nails can indicate anaemia or liver disease, while bluish nails can signify poor circulation or respiratory problems.
One particularly notable colour change is the appearance of greenish-black nails, which can be a sign of bacterial infection. This discolouration is often associated with a type of nail infection called paronychia, which results from bacteria entering broken skin near the cuticle and nail fold. The cuticle is the thin layer of skin at the base of the nail, and the nail fold is where the skin and nail meet. Paronychia can cause redness, swelling, pain, and tenderness around the nail, and may lead to the build-up of pus under the skin. It is typically treated with antibiotics and, in some cases, drainage of the pus.
It is important to note that not all nail colour changes are indicative of serious health issues. For example, yellow nails can be caused by wearing red nail polish without a base coat or by smoking. However, it is always a good idea to consult a doctor or dermatologist if you notice any persistent or concerning changes in your nail colour, as it could be a red flag for an underlying condition.
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Black or brown lines can indicate melanoma
The appearance of black or brown lines on your nails can be a cause for concern and may indicate melanoma. Melanonychia, also known as longitudinal melanonychia, is a condition characterised by the presence of brown or black stripes on the nail bed, extending from the bottom of the nail to the top. While melanonychia can have various causes, ranging from benign pigment deposits to malignant melanoma, it is crucial to consult a healthcare professional for an accurate diagnosis.
Melanoma of the nail, also known as subungual melanoma or nail melanoma, is a rare but serious form of skin cancer that develops under or around the nails. It is often challenging to detect in its early stages due to its resemblance to benign conditions. However, early detection and prompt treatment lead to the best outcomes. Therefore, it is essential to be vigilant about any changes in your nails and consult a healthcare provider if you notice any unusual symptoms.
The most common symptom of subungual melanoma is a discoloured line that appears on the nail, usually running vertically from the nail bed to the tip of the nail. This line may be brown or black and can vary in width, typically starting small and growing wider over time. In some cases, the discolouration may be irregular, with varying shades of blackish-brown. Additionally, the line may extend beyond the nail, discolouring the surrounding skin, a sign known as Hutchinson's sign.
Other signs and symptoms of subungual melanoma include nail lifting, splitting, or cracking, the presence of a nodule or bump under the nail, inflammation, and bleeding. It is important to note that melanoma can affect a single nail or multiple nails, and it may be more prevalent in the dominant hand, commonly affecting the thumb or big toe. While anyone can develop melanoma on their nails, it is more commonly observed in older individuals and people with skin of colour. A personal or family history of melanoma or previous nail trauma may also increase the risk.
If you notice any of the mentioned symptoms or have concerns about your nail health, it is crucial to consult a dermatologist or healthcare provider for a thorough evaluation. They may perform a dermatoscopic examination using a microscope to closely examine the discoloured areas and may also recommend a nail biopsy for a definitive diagnosis. Remember, early detection is key to successful treatment and improving health outcomes.
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Frequently asked questions
Healthy nails are typically pink with a white half-moon shape at the base called the lunula.
Yellow nails may be caused by an infection, a reaction to a product, or smoking. In rare cases, it could be a sign of lung disease or rheumatoid arthritis.
Nails that are whiter in colour may be due to liver disease, anaemia, or diabetes. White lines on the nails may indicate that nail growth has temporarily stopped.
Bluish nails can be a sign of poor circulation or respiratory issues.
A greenish-black discolouration of the nails can be a sign of a bacterial infection.
