Isla Bennett
Changes in nail colour, shape, or texture can be indicative of underlying health conditions, including nutritional deficiencies, infections, or systemic diseases. Grey nails, specifically, can be caused by medications such as antimalarials or minocycline. If you notice discolouration in your nails, it is important to consult a medical professional to determine the underlying cause and receive appropriate treatment.
| Characteristics | Values |
|---|---|
| Grey Nails | Antimalarial medications, Minocycline, Melanonychia, Poor circulation, Stress, Zinc deficiency, Trauma, Nutritional deficiency, Lung or breathing troubles, Silver poisoning, Wilson's disease, Blood poisoning, Bacterial infection, Chronic kidney disease, Adrenal problems, B12 deficiency, Liver disease, Silver deposits, Certain forms of cancer or melanoma, Injury, Malnutrition, Inflammatory skin diseases, Pregnancy, Fungal, bacterial or viral infections, Chemotherapy, HIV/AIDS, Allergic reaction to medicine, Antibiotics, Raynaud's phenomenon, Thyroid problems |
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What You'll Learn
Grey nails can be a side effect of medication
Nail abnormalities can be indicative of underlying health issues. Fingernails are made of a tough, protective protein called keratin. Changes in the colour, shape, or texture of your nails can be a sign of nutritional deficiencies, infections, or systemic diseases. For example, yellow nails can indicate a fungal infection or psoriasis, while bluish nails may indicate poor circulation or respiratory issues. Green-black nails can be caused by a bacterial overgrowth called pseudomonas, particularly under loose nails.
In some cases, nail abnormalities may be a result of external factors. Brittle nails, for instance, are often a sign of ageing, long-term exposure to water, or chemicals such as detergents and nail polish. Nails can also change colour due to physical trauma, such as nail injury or biting your nails.
It is important to see a doctor or a dermatologist if you are concerned about the colour of your nails, especially if you are experiencing other symptoms.
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It could be a sign of bacterial infection
Grey fingernails can be a sign of a bacterial infection known as paronychia. Paronychia is an infection of the tissue that surrounds the nail, including the skin, cuticle, and nail fold. It is caused by bacteria entering broken skin near the cuticle and nail fold, which can happen through cuts, broken skin, hangnails, ingrown nails, irritation from water or chemicals, or trauma to the nail bed or cuticle area. Paronychia can also be caused by fungal infections, which tend to develop more slowly than bacterial infections.
Bacterial paronychia usually appears suddenly, with symptoms such as a painful, red, swollen area around the nail, often at the cuticle or the site of a hangnail or other injury. There may also be pus-filled blisters. In some cases, paronychia can cause nail changes, such as detachment, abnormal shaping, or discolouration. If you suspect you have paronychia, it is important to see a healthcare provider for a proper diagnosis and treatment.
Healthcare providers typically treat paronychia with antibiotics to kill the infection and may also drain any pus that has built up around the wound. They may also culture the fluid to determine the specific type of bacteria causing the infection. In some cases, part of the nail may need to be removed to allow the infection to heal. Over-the-counter topical antibacterial ointments can also be effective in treating paronychia.
To prevent paronychia, it is important to avoid damaging your nails or fingertips, as injuries to the nails can last for months due to their slow growth. It is also important to protect your nails from exposure to detergents and chemicals by using rubber or plastic gloves. Additionally, it is recommended to trim your fingernails with a slightly rounded edge and to smooth the edges with an emery board or nail file.
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It could be a sign of chronic kidney disease
If your fingernails appear grey, it could be an indication of underlying chronic kidney disease. Grey nails are sometimes referred to as "kidney nails" or "renal nails" due to their association with kidney dysfunction.
Chronic kidney disease (CKD) is a condition in which the kidneys gradually lose their function over time. The kidneys are responsible for
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It could be a sign of liver disease
Grey fingernails can be a sign of liver disease. While grey nails are not explicitly mentioned in the sources, there are several nail abnormalities that are linked to liver disease, which could present as a grey colour.
Terry's nails, for example, are a type of nail discolouration that causes the nail beds to appear "washed out", with a thin reddish-brown strip near the tip. This condition is often a symptom of liver failure or cirrhosis. In the 1950s, Richard Terry found that more than 8 out of 10 people with severe liver scarring also had white nails. Terry's nails can also be a sign of ageing or other conditions, including diabetes.
Lindsay's nails are another type of nail discolouration associated with liver disease. They are characterised by nails that are mostly white with darker rims. This can indicate liver problems such as hepatitis. Lindsay's nails can also be a sign of kidney disease.
Muehrcke's lines are pairs of transverse white lines that extend all the way across the nail. These lines represent an abnormality in the vascular nail bed and can occur in patients with liver disease, as well as malnutrition and nephrotic syndrome.
Additionally, non-alcoholic fatty liver disease (NAFLD) can cause nail problems, including leukonychia, which is a whitish nail discolouration. As liver function becomes more abnormal, it can lead to jaundice, with yellowing of the skin and eyes.
If you are concerned about the appearance of your nails, it is recommended that you consult a doctor or dermatologist. They can evaluate your nails and provide an accurate diagnosis.
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It could be a sign of silver poisoning
If your fingernails have turned grey, it could be an indication of silver poisoning. Silver poisoning is a rare condition that can occur when someone is exposed to high levels of silver or silver compounds over an extended period. The most common cause of silver poisoning is through occupational exposure, where people work in industries that involve silver mining, smelting, or manufacturing silver products.
When it comes to the fingernails, one of the earliest and most distinctive signs of silver poisoning is the development of a grey hue on the nail bed. This greying can start subtly, with a slight discolouration, and then gradually spread and intensify over time. It's important to note that this discolouration is not simply a surface stain that can be wiped away; it's an indication of a build-up of silver particles in the nail bed, which is a more enduring change.
The mechanism behind this greying involves the deposition of silver particles in the nail matrix, located just beneath the cuticle. As new nail cells are generated, they incorporate these silver particles, resulting in the characteristic grey discolouration. While this symptom may be alarming, it's important to remember that it usually occurs in conjunction with other signs and symptoms of silver poisoning, which can affect multiple organ systems in the body.
If you suspect silver poisoning, it's imperative to seek medical attention promptly. The condition can be diagnosed through a comprehensive evaluation of your medical history, a physical examination, and specific laboratory tests. Treatment typically focuses on discontinuing exposure to silver and managing the associated symptoms. With prompt and appropriate intervention, a full recovery is expected in most cases without any long-term complications.
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Frequently asked questions
Grey nails can be caused by medications such as antimalarials or minocycline.
Fingernail or toenail abnormalities are often a sign of infection or injury. They can sometimes be a sign of an underlying condition. See your GP if your nails have changed in colour, texture, shape, or thickness and you don't know why.
Dark stripes on nails typically appear due to increased deposits of melanin and can be a sign of nail melanoma.
