Home Remedies for Foot Blisters The fluid filled small bumps, which are formed in the upper layers of the foot are known as the foot blisters. These are formed mainly due to excess rubbing in an area or friction to irregular surfaces. Some other causes are medical complications like herpes, chicken pox, diabetes, exposure to extreme climatic variations and allergic reactions. Based in these causes, foot blisters are of different shapes and sizes. Symptoms of foot blisters The major symptoms