Foot blood blisters are very painful and can be difficult to keep them from developing. Wearing shoes that fit properly is one of the many ways of avoiding foot blisters. Blisters on feet are caused by friction and heat produced whenever the skin of the foot comes in contact with the shoe or sock, therefore, it is important to reduce this friction and heat in order avoid the formation of these blisters.
One way of reducing the friction between the feet and the shoes is to cover the feet with a lubricant. The lubricant is going to decrease the amount of contact between the shoe and the foot and ultimately reduce the friction produced. Another way of reducing the frictional heat is to cover the sensitive areas of the feet like the toes and ankles with moleskin. Moleskin will keep the skin of these sensitive areas dry, thus reducing the chances of a blister being formed there.
The above mentioned preventive measures do not guarantee that you will never have a blood blister. If a person ends up having a blister despite the precautions then they could try to keep it covered by a tape to prevent it from bursting. If the blister bursts then there are chances that the exposed skin can get infected which can complicate things. Also you can find home remedies for blood blister. Thus, by covering the foot blister with a tape you can avoid the blisters on feet from getting infected.
If blisters on feet are kept from bursting and are allowed to heal naturally then they will heal in approximately 3-4 days. However, some blisters can take more time to heal than others. Such blisters require medical treatment for which you will have to consult a podiatrist. He will guide you about the medications you should have to take and will advise you on whether you should have surgery or not.