Trench foot
The mainstay of treatment, like the treatment of gangrene, is surgical debridement, and often includes amputation. Self-treatment consists of changing socks two or three times a day and usage of plenty of talcum powder. Wherever possible, shoes and socks should be taken off, feet bathed for five minutes, patted dry, talcum powder applied and feet elevated to let air get to them.
Barefoot
Since there is no artificial protection of the bare foot, some of the possible issues include cuts, abrasions, bruises, or puncture wounds from glass, nails, rocks, or thorns, as well as poisonous plants, animals, or parasites that can enter the body through the cuts on an injured bare foot. In people who are not habitually barefoot, Athlete's foot is spread by fungal spores coming into contact with skin that has been weakened and made moist. The fungus is known to only affect around 0.75% of habitually barefoot people in one study and can be prevented by reducing shoe use and keeping the feet dry, particularly after walking through a damp environment where people communally walk barefoot as the fungus only develops under the right conditions, such as when people fail to properly dry their feet after swimming or showering and then put on shoes. Wearing shoes such as flip flops or sandals in these areas can reduce the risk. As such, the fungus is very unlikely to develop on a person who goes barefoot all the time.