Toenail fungus (onychomycosis) is a long-term problem for roughly 15 percent of the U.S. population, according to an October 2009 New York Times report.

If sweaty feet make you reluctant to remove your shoes in front of other people, it may be time to find a way to control the problem. While it’s not unusual to experience sweating feet occasionally, some people suffer from excessive sweating every day.

An ingrown toenail can make each step more painful than the next. If you experience pain and redness at the toe, taking steps to encourage normal toenail growth can reduce symptoms. Do not leave untreated--ingrown toenails can lead to infection and will continue to grow abnormally without intervention.

Toenails consist of a hard material called keratin, which helps to protect the soft tissue at the end of your toes from damage. However, if you strike your toenail hard enough, such as by hitting it against an object or by dropping a heavy weight onto your foot, the nail may break.

Corns, also known as calluses, are thickened patches of skin that develop as a result of constant pressure. When you develop a corn, it's your skin's way of protecting itself from blisters and other open sores. Corns can be unsightly and look thick and scaly.

When your child breaks out in any kind of bumps, you probably tell her not to touch them, even if they itch. Bumps on the foot pads present a problem because you generally can't tell your child to stop walking altogether. Instead, treatment depends on the cause and severity of the bumps.

When an ingrown toenail causes you severe pain and oozes with pus, your doctor may remove part of the nail. Nail removal typically relieves the majority of the pain, but the toe will likely remain sore until it heals. Proper care after surgery will help the toe heal faster and decrease the chances of recurrence.

According to the American College of Foot and Ankle Surgeons, an ingrown toenail exists when a toenail is curved and grows into the skin, usually at the nail borders. This “digging in” of the nail irritates the skin, often creating pain, redness, swelling and warmth in the toe.

Corns are small round or cone-shaped areas of thickened skin that commonly develop on the feet in places where shoes exert too much pressure. Occasionally, corns develop on the fingers where repetitive use of tools, work equipment or certain musical instruments cause skin thickening, but, according to Medicinenet.

Although toenail problems sound like minor maladies to the uninitiated, anyone who’s ever suffered from a toenail growth problem knows otherwise. Conditions like brittle nails, toenail fungus or ingrown nails can cause tenderness, unsightliness, pain and even serious infection if neglected.

If your toenails are thick, crumbling and yellow, white or black in color, you may have a fungal infection on the nails, according to MayoClinic.com. Soaking the foot in vinegar is an old home remedy to reduce nail fungus. Its antifungal properties may help vinegar cure your toenails.

Toenail fungus, or onychomycosis, is a common condition that causes the toenails to become brittle, thick, discolored and crumbly. Infection with nail fungus may also cause pain, especially if the infection causes the nail to separate from the nail bed.