If you have too much pressure one on part of your foot, pressure ulcers may occur. If a corn or callus presses into your skin, it can damage inner layers and create an open wound. Pressure ulcers are most common on the big toe, the heel, and the ball of the foot. Diabetics are at an increased risk for pressure ulcers because of reduced sensation to the feet.
Symptoms: Pressure ulcers develop gradually, so it is especially important to examine your feet daily if you are at risk and have reduced sensations in your feet. Common symptoms of pressure ulcers include thickened areas of skin, open wounds, bone or joint problems, and red hot spots.
Non-Surgical Treatments: Foot ulcers can take a long time to heal if you have poor circulation, or if you have an infection. Your foot doctor might clean the ulcer and then cover it to protect the area. You can also wear special shoes or a cast in order to keep pressure off of the ulcer. Antibiotics might be prescribed if your ulcer becomes infected.
Surgery: In cases of severe infection, the area might be drained and cleared.