1. What is polydactyly? Polydactyly is a condition in which the fetus has an extra finger or toe than normal due to various factors (including environment, genetics, nutrition, etc.) that interfere with the development of the fetus in the mother’s womb. An extra finger (toe) next to the thumb (toe) is the most common, followed by the little finger (toe). 2. What are the risks of polydactyly? Does it affect other organs? Polydactyly has an effect on the adjacent fingers, mainly in terms of function and appearance of the hands and feet, and also has a certain impact on the psychology. There is no effect on other organs. 3. What are the causative factors of polydactyly? The causative factors may be related to environmental pollution, heredity, embryonic fetal malnutrition and other factors. 4. If the first baby has polydactyly, will the second baby also have polydactyly? Not necessarily. However, the chance of the second baby having polydactyly is higher than the first baby not having polydactyly. 5. Can the offspring of a child with polydactyly also get the disease? It is possible to get this disease. However, it is not absolute. 6. Does polydactyly require treatment? Polydactyly needs to be treated.