In normal, healthy people, fungal infections of the nails are most commonly caused by fungus that is caught from moist, wet areas. Communal showers, such as those at a gym or swimming pools, are common sources. Going to nail salons that use inadequate sanitization of instruments (such as clippers, filers, and foot tubs) in addition to living with family members who have fungal nails are also risk factors. Athletes have been proven to be more susceptible to nail fungus. This is presumed to be due to the wearing of tight-fitting, sweaty shoes associated with repetitive trauma to the toenails. Having athlete's foot makes it more likely that the fungus will infect your toenails. Repetitive trauma also weakens the nail, which makes the nail more susceptible to fungal infection.
Terbinafine can cause gastrointestinal (stomach and bowel) problems and a temporary loss of taste and smell. It can also interact with certain antidepressants and heart medications. Overall, terbinafine has far fewer drug-drug interactions than itraconazole. Nevertheless, it’s still important to tell your doctor if you are taking any other medication. As a precaution, this medication should not be taken during pregnancy or if you are breastfeeding.
In other words, the combination of urea and bifonazole got rid of nail fungus in an extra 10 participants. But there was no difference between the two groups six months after treatment. Also, the fungal infection returned in many participants, so it’s likely that neither of the two treatments can increase the chances of getting rid of the fungus in the long term.
Topical nail-bed fungus treatments are a safe option that almost anyone can use. They work best when the infection is treated in its earliest stages. However, these medications do not heal the nail itself, only the fungus growing on the nail bed and surrounding area. Only oral medications, which come with many contraindications and may not be safe for everyone, can treat the nail itself.
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Yeast infection treatment depends on the specific kind of infection that is being treated. Skin yeast infections are highly treatable with medicated creams. Medicated suppositories may be used to treat yeast infections in the vagina. Thrush may be treated with a medicated mouthwash or lozenges that dissolve in the mouth. Severe infections or infections in someone with a compromised immune system may be treated with oral anti-yeast medications.

Readily available over-the-counter treatments work well for most nail-bed infections, especially early cases. An advanced toenail fungus infection may require a podiatrist’s intervention. To counteract a serious infection, medical professionals may utilize prescription topical medications, oral medications, and even laser therapy.  Some cases best respond to combination therapy.
Treatment options during pregnancy may include dilute vinegar soaks or sprays (roughly one part white household vinegar to four parts water) and Lotrimin cream twice a day for two to three weeks to the soles. Antifungal pills are generally not recommended during pregnancy because of the potential side effects and possible fetal harm. Always check with your OB/GYN before using any medication or treatment during pregnancy.
Although treatment is usually sought for cosmetic reasons, nail fungus can be serious and should be treated. For example, if it is a severe infection, it can cause permanent damage to your nails. The infection can also spread beyond your nails, especially if you are in a high risk group, such as people with diabetes or impaired immune systems. High-risk people can develop cellulitis, a skin tissue infection, if toe fungus isn't treated.[4]
Topical agents such as amorolfine (Loceryl 5% nail lacquer; applied once or twice a week) and ciclopirox (Penlac 8% nail lacquer; applied daily) are usually prescribed for mild forms of the disease, but the treatment periods are long and their efficacy is somewhat limited due to poor nail plate penetration. These medications kill fungi by interfering with their cell membranes, which leads to their death.
Select shoes that fit right –  Choosing the correct footwear is a must if you want to avoid toenail fungus. Shoes should not touch your toenails at all. Don’t jam your feet into shoes that are too big either – this will cause you to jam your toenail into the front of the shoe causing damage. According to the American Academy of Physicians, the best shoes have a wide toe box.
Toenail fungus often begins as an infection in the skin called tinea pedis (also known as athlete’s foot). The fungus often starts under the nail fold at the end of the nail. Over time, it grows underneath the nail and causes changes to its appearance, such as a yellow or brownish discoloration. It can also cause thickening and deformity of the toenail. 

Many individuals with athlete's foot have no symptoms at all and do not even know they have an infection. Many may think they simply have dry skin on the soles of their feet. Common symptoms of athlete's foot typically include various degrees of itching, stinging, and burning. The skin may frequently peel, and in particularly severe cases, there may be some cracking, fissuring, pain, and itching in the toe webs. Occasionally, athlete's foot can blister.
When athlete's foot fungus or infested skin particles spread to one's environment (such as to clothes, shoes, bathroom, etc.) whether through scratching, falling, or rubbing off, not only can they infect other people, they can also reinfect (or further infect) the host they came from. For example, infected feet infest one's socks and shoes which further expose the feet to the fungus and its spores when worn again.
Ingrown toenails are caused by the growth of the toenail into the surrounding nail fold. Symptoms and signs include toe pain, swelling, redness, and yellow drainage. Treatment at home involves soaking the affected foot in diluted white vinegar or Epsom salts, elevating the foot, and trimming the nails straight across. Surgery is also an option for severe cases. Prevent ingrown toenails by wearing shoes with a wider toe box and avoiding repeated injury to the toenails. Avoid curving or cutting the nails short at the edges.
No one knows where a specific person catches the fungus, as it is everywhere. However, since the fungus does thrive in warm moist areas (like sweaty feet), there are certain areas one should avoid or use with caution. Shower floors, locker rooms, and swimming pools are suspected of being sources of the fungus, although there are no studies proving this fact. Nail polish and acrylic nails also make the nail less "breathable" and make the nail more susceptible to fungal infection. Fungi are everywhere -- in the air, the dust, and the soil. Hygienic measures such as spraying socks and footgear sound sensible, and perhaps these measures can even help a little bit. However, avoiding tight, nonbreathing shoes or steering clear of athletic facility floors may very well be the best prevention available. Daily washing of the feet and drying between the toes can help to prevent nail fungus. The fungi carried on the coats of pets, like cats and dogs, don't often cause nail fungus. Wearing white socks does not help.

Sometimes people with a fungal nail infection are offered laser treatment. This involves shining infrared or ultraviolet (UV) light on the nail in order to kill the fungi. Laser treatments haven’t been proven to work in good quality studies. Because statutory health insurers in Germany don’t cover the costs of this treatment, people have to pay for it themselves.

Prescription oral antifungals such as terbinafine (Lamisil) or fluconazole (Diflucan) are traditionally used to treat toenail fungus. These treatments are often effective, but they may cause serious side effects ranging from upset stomach and dizziness to severe skin problems and jaundice. This may be why many people try home remedies instead. Here are 10 of these popular at-home treatments.

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