Hyperdactyly is a pathological phenomenon that consists of an increase in the number of phalanges on the fingers or any other part of the body. There are several theories in the world about the causes of this disease, but most experts agree that its occurrence is associated with genetic factors or injuries that lead to changes in tissue development.
Hyperdactyly can be of varying degrees of severity and manifests itself both in a visible increase in the number of fingers, and in the form of a change in their shape or appearance. This is usually accompanied by slow skeletal growth. In most patients with hyperdactyly, this phenomenon is temporary and gradually goes away as the person gets older. Some people may continue to suffer from this condition into adulthood.