Andy Montoya
Toenails that smell like cheese are usually a sign of a fungal infection called onychomycosis or tinea unguium. This condition is common in people who wear closed shoes for long periods, as the feet become sweaty, creating a perfect environment for the fungus to grow. The fungus infects the nail from the underside, causing a white to yellowish discolouration on the surface, and a creamy-yellow or greenish-black discolouration underneath the nail. The smell is caused by the same type of bacteria used to mature certain types of cheese, called Brevibacterium.
| Characteristics | Values |
|---|---|
| Cause | Fungal infection, specifically Onychomycosis or Tinea unguium |
| Odor Source | Brevibacterium, a type of bacteria |
| Symptoms | Discoloration (white, yellow, green, brown), brittleness, thickness, debris accumulation, pain |
| Treatment | Antifungal solutions, foot deodorant/antiperspirant, tea tree oil, nail cleaning, lab tests for clinical diagnosis |
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What You'll Learn
Toenail fungus
The fungus thrives in dark, damp, and sweaty environments, often created by wearing closed shoes for extended periods. It is more prevalent in toenails than fingernails due to the enclosed nature of shoes. The feet, encased in shoes, provide an ideal environment for fungal growth, and the fungus can spread from the toenails to the feet, resulting in Athlete's Foot.
The most prominent indicator of toenail fungus is the distinct cheese-like smell. However, other symptoms include discolouration of the toenails, often appearing as white, yellow, green, brown, or black shades, and brittleness of the toenail. Additionally, the nail may thicken, lift away from the nail bed, or exhibit streaking within the nail. These visual signs, particularly discolouration, can help differentiate between toenail infections, bacterial growth, and simple odour.
To confirm whether the odour is due to toenail fungus or another issue, it is advisable to consult a podiatrist or a doctor. They can provide an accurate diagnosis and recommend appropriate treatment options. Treatment for toenail fungus typically involves systemic or topical preparations. Topical agents, such as antifungal solutions, can be applied directly to the nail, while systemic agents come in the form of medications.
To prevent and manage toenail fungus, maintaining proper foot hygiene is crucial. This includes regularly washing and thoroughly drying the feet, especially after wearing shoes. Additionally, wearing socks and changing them daily can help absorb moisture and reduce the likelihood of creating an environment conducive to fungal growth. In cases of persistent odour, foot deodorant or antiperspirant can be used.
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Bacteria
Toenails that smell like cheese are usually associated with sweaty feet and poor hygiene. In some cases, the foul smell may have a medical cause. White smelly gunk under the toenails that smell like cheese is likely due to a toenail fungus called Onychomycosis or Tinea unguium. This condition is common in people who wear closed shoes for long periods, creating a perfect environment for the fungus to grow. The fungus can cause discolouration and brittleness of the toenail, with colours ranging from yellow to green, brown, or white.
However, the cheesy odour itself is not caused by the fungus but by a type of bacteria called Brevibacterium, which is also used to mature certain types of cheese. This bacteria thrive in the same conditions as the fungus, such as dark, moist places like sweaty shoes. Thus, both the fungus and the bacteria can coexist and contribute to the overall unpleasant smell.
To prevent and address smelly toenails, proper foot care and hygiene are essential. This includes regularly washing and drying the feet, especially after wearing shoes, and ensuring the feet and toenails are clean. Wearing socks and changing them daily can also help absorb sweat and reduce moisture. Additionally, foot deodorant or antiperspirant can be used to manage foot odour and prevent fungal growth.
In some cases, a fungal infection may require medical attention, especially if it is persistent or difficult to treat. A podiatrist or doctor can provide guidance on the appropriate treatment options, which may include topical or systemic medications. It is important to examine the feet and toenails for any changes in colour, texture, or thickness that could indicate a fungal infection or other foot-related issues.
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Poor hygiene
Smelly toenails are often associated with poor hygiene. The smell usually goes away with a thorough wash. However, if the odour persists, it may be a sign of a fungal infection. Toenail fungus, or onychomycosis, is a common condition that affects about 50% of people with nail conditions. It is caused by organisms such as dermatophytes and non-dermatophytes, which thrive in dark, moist environments like sweaty shoes.
To maintain good foot hygiene and prevent fungal infections, it is important to wash your feet regularly, especially after wearing closed shoes for extended periods. Ensure that you dry your feet well, paying close attention to the areas between your toes, as fungi thrive in moist environments. It is also recommended to wear clean socks and change them daily, or more frequently if your feet tend to sweat a lot.
If you notice discolouration, thickening, or lifting of your toenails, it may indicate a fungal infection. In such cases, it is advisable to consult a podiatrist or a doctor for appropriate treatment. They may recommend antifungal solutions, topical medicines, or, in more severe cases, laser treatment for toenail fungus.
While poor hygiene can contribute to toenail odour and fungal infections, it is important to note that other factors, such as underlying health conditions, can also play a role. For example, individuals with lowered immunity, poor circulation, or diabetes may be more susceptible to fungal infections and should seek medical advice accordingly.
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Footwear choices
Toenails that smell like cheese are usually indicative of a fungal infection, also known as onychomycosis or tinea unguium. This condition is common in people who wear closed shoes for extended periods, creating an ideal environment for the fungus to thrive due to the darkness and moisture. Therefore, footwear choices play a crucial role in preventing and managing toenail fungus.
When it comes to footwear choices, it is essential to prioritize breathability to minimize moisture accumulation. Opt for shoes made from materials that allow air circulation, such as canvas or leather, especially during warm weather. Additionally, closed shoes with adequate ventilation features, such as mesh panels, can help reduce the buildup of sweat and moisture.
Another important consideration is the fit of your shoes. Ill-fitting shoes that are too tight can restrict airflow and trap moisture, creating the perfect environment for fungal growth. Ensure that your shoes provide a comfortable fit with enough room for your toes to move freely. This is particularly important for individuals who need to wear closed shoes for extended periods due to work or other commitments.
Frequent rotation of shoes can also help prevent toenail fungus. Allowing your shoes to air out and dry completely between wears can inhibit fungal growth. Alternating between different pairs of shoes gives the insoles and interiors time to recover and reduces the chances of creating a persistent damp environment that fungi thrive in.
In addition to footwear choices, the type of socks you wear is also important. Opt for socks made from breathable materials such as cotton or wool, which can absorb sweat and help keep your feet dry. Changing your socks regularly, especially if they become damp, can further reduce the risk of fungal growth.
Finally, it is worth noting that going barefoot in public spaces, such as communal showers or pool areas, can increase the risk of contracting toenail fungus. When in such environments, consider wearing waterproof shoes or flip-flops to protect your feet from exposure to fungi.
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Treatment options
Toenails that smell like cheese are usually caused by a fungal infection. The fungus thrives in dark and damp environments, such as sweaty shoes, and can be worse if you don't wear socks. The infection can cause discolouration and brittleness of the toenail, with a white to yellowish appearance and a crumbly texture. In some cases, there may be a creamy-yellow or greenish-black discolouration of soft sticky mash underneath the nail, which is often the source of the smell.
If you suspect a fungal infection, it is important to consult a podiatrist or dermatologist to determine the best course of treatment for your specific condition. Treatment options may include:
- Topical treatments: These are applied directly to the nail, such as a paint, lacquer, or solution.
- Systemic treatments: These come in the form of medicines, such as oral antifungal medications, which are usually recommended for severe cases and taken for around 12 weeks. However, they may have side effects and negative interactions with other medications.
- Laser treatment: This is a more recent option that uses an infrared laser to penetrate the toenail and destroy the fungus. It is generally painless but may require multiple sessions over several weeks.
- Nail removal: In severe cases, the nail may need to be removed under local anaesthetic, and the nail bed can be treated with an antifungal agent.
- Prevention and hygiene: Keeping your feet clean and dry, wearing socks, and changing your socks and shoes regularly can help prevent and manage fungal infections.
- Foot deodorant or antiperspirant: These can help manage the smell associated with fungal infections.
- Home remedies: Natural products with antibacterial properties may provide short-term relief, but they may not be as effective in treating the infection, and recurrent infections are possible.
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Frequently asked questions
Toenails that smell like cheese are usually a sign of a fungal infection called onychomycosis, caused by the organism tinea unguium.
Toenail fungus is caused by a type of bacteria called Brevibacterium, which thrives in dark, moist, and sweaty environments, such as sweaty shoes or socks.
Symptoms of toenail fungus include a white, yellow, green, or brown discolouration of the toenail, as well as brittleness, thickening, or lifting of the nail from the nail bed.
To treat toenail fungus, it is recommended to practice good foot hygiene by regularly washing and drying your feet, especially after exercising or spending time in sweaty shoes. You can also try wearing foot deodorant or antiperspirant, or using topical or oral antifungal medications.
If the fungal infection is persistent or causing you concern, it is recommended to consult a podiatrist or your family doctor for professional treatment options, such as laser therapy.
