When there is long-term pressure in the same place, the callus that has formed can grow inward. In that case we speak of a corn. This can make it feel like there is a thorn in the foot. It gives a stinging or burning sensation.
A corn looks like a dark yellowish discoloration in the callus. When you press this, it creates a sharp, stabbing pain.
Cause
Just like calluses, a corn is created by pressure and friction. The sustained pressure creates calluses that become thicker and harder and eventually a corn forms where the pressure is highest. The moment that shoes that are too narrow are often worn or that there is an abnormal foot or toe position, these pressure points can arise. If this is not treated, it may be that a corn will eventually come and you can have a lot of pain.
Therapy
When a corn returns time and again, despite the treatment of a (medical) pedicure, the podiatrist can help you. An orthosis can be made for corns on, between or under the toes. This is a custom-made toe piece that ensures that corn is pressure-free.
When a corn has formed under your foot, a pressure-distributing sole can be made so that the corn is also pressure-free. As soon as the pedicure continues the treatment - in combination with a therapy from the podiatrist - the corn will become smaller and less painful.
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