Small swelling of skin containing watery fluid is termed as blister. Friction is considered as the main cause behind appearance of blisters. The watery fluid is produced by the body system as response to the friction. Watery layer is formed beneath the rubbed skin as a result of friction. Such blisters cause pain and pressure.

Blisters develop when feet get sweaty, hot and socks stick to feet. Rubbing of feet and socks against each other, inside the shoes, creates friction. As a response to this friction fluids are produced by the body system for protection of area. Such fluids form layer under the skin in form of small balloons. This is how blisters develop. Neuropathy is common complication of diabetes patients. Such people may not recognize the painful event and only qualified medical practitioner can diagnose and treat their blisters.

Occurrence of blisters is most common in athletes, especially those who wear new shoes. Blisters are also common in runners, walkers etc who undertake prolonged running or walking in competitions like long hill walks and marathons.

You must consult a doctor if your blister is red, has red lines around it or yellow fluid leaks from it. Redness and leaking of yellowish fluid are the symptoms of infection.

Factors responsible for occurrence of Foot Blisters
The factors may vary from one person to another. Following are some of the common factors that can attribute to occurrence of foot blisters.

• Moisture, heat and friction
• Improver ventilation to foot or wearing of shoes and socks that could produce friction
• Skin fungal infection
• Excessive foot perspiration
• Burns to foot or allergic reactions

This is how Foot Blisters Form
Occurrence of blisters is associated with heat and sweat. Due to stickiness led by heat and sweat socks sticks to foot. This results in rubbing of foot and socks against each other, inside the shoe. The condition becomes more favorable for friction if the shoes are very tight. The body system responses to this friction by producing bubble like watery structures under the skin layer, to protect the skin. Such small watery, balloon like structures formed beneath skin are called as blisters. These can be felt and seen even by physical examination. However, people suffering from neuropathy (caused due to diabetes) may not feel the pain exerted by the bristles.

Prevention of Foot Blisters
You can prevent or reduce the risk of developing Foot Blisters by following simple tips given below.

• Always use properly fitting (correct size and providing comfort) foot wear.
• Always dry your feet properly after bathing, washing or swimming
• Never use wet socks, shoes or boots.  This can increase risk of developing blisters.
• You must wear clean and dry socks. Also change your socks regularly
• Use foot powder for ensuring dry feet

Treatment of Blisters
If most of the cases the blister heals at its own. However, if the blister is popped you may have to consult your doctor. Your doctor will prescribe certain medications.