Patient's question:
The son is so young and the penis has already started to develop. It has just started to grow some hair, and it has also started to grow larger than before, indicating that it has already begun to develop. But is it normal for a child to be this young? How old should one be for development to be considered normal, and how large should it grow to be considered normal?Doctor's answer:
Hello, it's normal. At the age of 13, development just begins. The penis can continue to grow until around the age of 25. Regarding the size and thickness of the penis, a sample survey shows: In China, the longest penis length in a non-erect state is 11 cm, the shortest is 3 cm, with an average of 6 cm; the maximum diameter is 4.0 cm, the minimum is 1.5 cm, with an average of 2.5 cm; when erect, the longest penis length is 18 cm, the shortest is 8 cm, with an average of 12 cm.