They can occur anywhere in the feet but are usually located over bony prominences. Excessive pressure and sheering stress causes a tear within the upper layers of the skin (the epidermis), forming a space between the layers while leaving the surface intact. Then fluid seeps into the space. Blisters are usually painful but with conservative care can be managed effectively. Popping blisters in a non sterile environment is not advised as this can introduce infection to the foot.
If you are a walker then silicone impregnated socks would be useful or other specialised walking socks. Also it is important not to wear new foot orthodontics, sports shoes, new walking boots or new shoes for too long initially, always wear them for a few hours at a time; this will reduce the risk of rubbing, pressure or friction that may lead to blisters. Other useful measures to prevent blisters are items such as reusable gel pads, gel insoles and adhesive padding. It is important to treat any fungal infection in the skin and dry the feet after washing. Using an emollient cream can help to keep the skin hydrated.
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