Small penis

A small penis (micropenis) means that the penis has a normal appearance and a normal ratio of length to diameter, but the length of the penis body is less than 2.5 standard deviations of the average normal penis length. The length of the penis refers to the straightening of the penis head as much as possible, which is equivalent to the distance from the top of the penis to the pubic bone when the penis is fully erect. Adults generally regard penis as a small penis with a relaxed length of less than 3cm. The etiology of the small penis is complex. Although it can be treated with drugs and surgery, the overall effect is not good.

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