Excessive sweating of the feet is called hyperhidrosis. It's more common in men than in women, and more common in young adults than older adults.
People whose feet sweat excessively often also have problems with excessive sweating of the palms. According to the International Hyperhidrosis Society, 3 percent of the population suffers from hyperhidrosis.
The most obvious symptom of hyperhidrosis is feet that sweat excessively. Some people sweat so much that their feet may slip around inside their shoes.
The feet may also have a whitish, wet appearance; sometimes, foot infections are present as well. (Constant wetness breaks down the skin, allowing infection to set in.) Foot odor is common.
Those suffering from hyperhidrosis may also experience emotional stress and worry regarding foot odor. Sweat-related anxiety and isolation can be particularly severe among teens with plantar hyperhidrosis.
Good foot hygiene is essential. Wash your feet daily with an antibacterial soap; be sure to wash between the toes. Dry the feet thoroughly, then apply cornstarch, foot powder, or an antifungal powder to your feet. Wear wicking socks made of natural or acrylic fiber blends that draw the moisture away from your feet instead of trapping it. Some synthetic blends are designed to wick moisture away from the skin and work best to keep the feet dry. One hundred percent cotton socks absorb moisture but do not wick it away from the skin and frequently lead to blisters, so they should be avoided.
It's also a good idea to change socks during the day. Stash an extra pair of socks at school or at work, and change socks mid-way through the day. Wear shoes that are made of breathable materials