Ava Monroe
Yellow nails can be caused by a variety of factors, including staining from dark nail polish, fungal infections, or even smoking. In some cases, yellow nails may indicate a more serious underlying health condition such as diabetes, thyroid disease, or psoriasis. Yellow nail syndrome, a rare disorder characterised by nail discolouration and respiratory symptoms, can also be a cause. While yellow nails can sometimes be treated at home, it is important to consult a doctor if the discolouration persists or is accompanied by other symptoms.
| Characteristics | Values |
|---|---|
| Cause | Staining from substances like nail polish, self-tanner, or tobacco |
| Fungal or bacterial infections | |
| Underlying health conditions, such as diabetes, thyroid disease, psoriasis, or yellow nail syndrome | |
| Medication side effects | |
| Treatment | Home remedies: hydrogen peroxide, baking soda, tea tree oil, oregano oil, diluted vinegar |
| Medical treatment: oral prescriptions such as terbinafine (Lamisil) or itraconazole (Sporanox) | |
| Treating the underlying cause, such as quitting smoking, discontinuing certain medications, or managing thyroid disease |
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What You'll Learn
Yellow nail syndrome
Nail changes include slow or stopped growth, thickening, yellow or green discolouration, and detachment from the nail bed. Swelling, or lymphedema, affects about 8 in 10 people with YNS and usually occurs in the legs a few months after nail changes. It is caused by the accumulation of lymph, a protein-rich fluid, in the soft tissue under the skin, which can cause a feeling of heaviness or tightness in the affected areas.
Respiratory symptoms are also common in people with YNS, with almost 2 in 5 people experiencing fluid buildup in the lung tissue (pleural effusions), which can lead to shortness of breath, chest pain, and a chronic cough. Other respiratory complications include chronic infection, bronchitis, bronchiectasis, sinusitis, and recurrent pneumonia.
The exact cause of YNS is unknown, but it is believed to be linked to issues with the circulatory or lymphatic system, which can lead to fluid accumulation in the lungs and other parts of the body. It may also have a genetic component, as some cases have been reported to run in families. YNS typically affects adults over the age of 50 but has also been documented in children.
There is no specific treatment for YNS, but symptoms can be managed through various interventions, including oral vitamin E and triazole antifungal medications for nail changes, low-stretch bandages and elastic compression stockings for swelling, and specific medications for underlying diseases such as cancer or rheumatoid arthritis.
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Staining from nail polish
To prevent staining, you can use a base coat, which acts as a protective layer between your nails and the nail polish. A nitrocellulose-free base coat or a water-permeable nail polish may be particularly effective in preventing staining. You can also try to use lighter colours, as they are less likely to stain.
If your nails are already stained, you can try to improve their appearance by using products like hydrogen peroxide, baking soda, or whitening toothpaste. Soaking your nails in a solution of warm water, hydrogen peroxide, and baking soda may help to remove stains beneath the surface. Lemon juice is a natural bleaching agent that can also be used to remove yellow stains. However, it is important to note that you cannot completely remove staining from your nails, and you will have to wait for them to grow out. In the meantime, you can use a blurring base coat or a pale pink or purple polish to neutralize the yellow colour and create a barrier between your nails and the staining polish.
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Smoking
Yellow-stained fingers are a clue for smoking-related diseases or harmful alcohol use. According to the American Academy of Dermatology, yellow nails and fingers are telltale signs of smoking or previous smoking. Smoking also raises the risk of nail fungus infections, as the lack of oxygen and nutrients in the fingernail area reduces its natural defence against fungi. Long-term smokers may also experience a rounded or clubbed appearance of the nails due to chronic lung disease or COPD.
There are several home remedies to remove nicotine stains from your fingers and nails. These include:
- Soaking your hands in lemon juice or bleach
- Using toothpaste on your fingers
- Exfoliating your skin with a nail file, pumice stone, body brush, or scrub
- Soaking your nails in mouthwash
- Rubbing your nails with orange peels
- Soaking your nails in a mixture of hydrogen peroxide and water, then using a toothbrush to buff off remaining stains
- Soaking your hands in a bowl of hot water with two or three uncoated aspirin tablets dissolved in it
- Using baking soda dissolved in water
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Fungal infections
Yellow nails can be caused by various factors, one of them being fungal infections. Fungal nail infections, also known as onychomycosis, are a common issue that can lead to yellow nails. This occurs when fungi infect one or more of your nails, causing them to change colour and become thickened, brittle, or distorted. Diabetics, for instance, often experience dry skin and nails, making them more susceptible to fungal infections that result in further thickening and yellowing of the nails.
Fungal nail infections can be challenging to treat, and they may require prolonged therapy. Treatment for fungal infections typically focuses on resolving the underlying cause. Topical treatments, such as tea tree oil or oregano oil mixed with a carrier oil, can be applied directly to the affected nail to combat the infection. Additionally, oral antifungal medications, such as terbinafine (Lamisil) or itraconazole (Sporanox), may be prescribed to treat the infection from within.
It is important to consult a healthcare professional, such as a dermatologist, to receive an accurate diagnosis and appropriate treatment plan. They may examine your nails, evaluate your medical history, and recommend specific treatments based on the severity of the infection. In some cases, they may suggest steroid injections directly into the nail cuticle or prescribe systemic medications if the infection has spread beyond the nails.
Practising good nail hygiene is essential to prevent fungal nail infections. Keeping your nails clean, dry, and trimmed can help reduce the risk of infection. Additionally, avoiding nail polish or artificial nails can give your nails a chance to breathe and recover.
While fungal infections are a common cause of yellow nails, it is worth noting that there are other potential causes as well. These include staining from substances like nail polish, self-tanner, or smoking; side effects of certain medications; or underlying health conditions such as diabetes, thyroid issues, or psoriasis.
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Underlying health conditions
Yellow nails can be indicative of various underlying health conditions. One of the most common causes of yellow nails is smoking or tobacco staining, which is associated with a higher risk of tobacco-related diseases such as cancer, heart disease, stroke, and chronic obstructive pulmonary disease. Heavy smokers are at a particularly high risk of developing lung cancer and are more prone to fungal infections.
Another cause of yellow nails could be a fungal infection, which is notoriously difficult to treat. If you suspect a fungal infection, it is important to seek medical attention promptly. Bacterial infections can also cause yellow nails, and tea tree oil or oregano oil mixed with a carrier oil can be used to treat this.
Yellow nails can also be a symptom of diabetes, which causes a yellow tint in the nails of around 40% of people with the condition. People with diabetes are also more susceptible to fungal nail infections. Nail psoriasis is another skin condition that can cause nail changes, including discoloration and pitting.
In some cases, yellow nails may be a sign of a rare disease called yellow nail syndrome, which affects the fingernails and toenails, causing them to become yellow, thick, and curved. This syndrome is associated with problems in the lymphatic system, leading to fluid buildup and swelling in the lower limbs and lungs. It can also increase the risk of developing infections around the nails.
Other possible underlying health conditions that can cause yellow nails include:
- Melanonychia: a condition that results in nail discoloration.
- Medication side effects: Certain medications, such as tetracyclines (an antibiotic), can cause nail discolouration.
- Thyroid disease: Both hypo- and hyperthyroidism can lead to nail changes, including yellowing of the nail plates, thickening, crumbling, brittleness, and slow growth.
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Frequently asked questions
Yellow nails can be caused by something benign, such as staining from nail polish, self-tanner, or tobacco use. However, it could also be a sign of a fungal infection or a more serious underlying health condition, such as diabetes, thyroid disease, or psoriasis.
If the yellowing is caused by staining, you can try home remedies such as soaking your nails in a mixture of hydrogen peroxide, baking soda, and warm water. If the yellowing is caused by a fungal infection, tea tree oil or oregano oil mixed with a carrier oil can be applied topically to the affected nail.
Yellow nail syndrome is a rare disorder that causes nail discolouration, as well as respiratory and limb symptoms. Nail changes include thickening, curving, and separation from the nail bed. Other symptoms include fluid buildup and swelling in the lower limbs, chronic cough, repeat sinus infections, and pneumonia.
If your yellow nails are accompanied by other symptoms or if the discolouration does not go away within a few weeks, you should consult a doctor. A doctor will be able to run tests to determine the underlying cause and provide appropriate treatment.
