Foot blisters are small-sized bubbles filled with fluid that form beneath the skin. These blisters are the usual cause of foot pain, especially among runners and other athletes. The blisters are likely to form on the base of the foot but also on the top or sides.
Burns and friction
Generally, blisters form due to friction and pressure, possibly from footwear that are too tight or from repeated rubbing. It is important to note that a blister contains clear fluid but if there is an injury, it might include blood.
A burn can also cause the formation of foot blisters. In case a blister is due to a burn and becomes infected, it might contain pus. The treatment is aimed on keeping the blister clean and possibly drainage of the fluid to lessen the pain.
Foot blisters due to contact dermatitis
Contact dermatitis can trigger small blisters to form on the base of the foot as a response to an allergy. The dyes and chemicals utilized in the manufacturing of footwear, fragrances in detergents and soaps and some topical and oral medications can trigger the formation of blisters. Blisters can also manifest as a bodily response to poison ivy if the base of the foot has been exposed.
Athlete’s foot can also cause small-sized foot blisters. The condition develops if a form of fungus thrives on the skin. The skin might form blisters that are itchy initially and later crack open, resulting to a crusty rash.
Dyshidrotic eczema is a condition that causes the formation of small foot blisters as well as on the palms of the hands. The itchy blisters can last for up to 3 weeks and prevalent during certain times of the year.