包皮过长和包茎是男性青少年中常遇到的问题。包皮是指包在阴茎头(俗称龟头)外边的一层松软的皮肤。在婴幼儿时期,因为阴茎比较短小,包皮把整个阴茎头包住,可能还有多余。到十岁左右,由于阴茎不断长大延伸,包皮就慢慢地上翻,使整个或一部分龟头露出来,可见到尿道口。如果到了青年发 The foreskin is too long and phimosis is often encountered in male adolescents. Foreskin is wrapped in the penis head (commonly known as glans) layer of soft skin outside. In infancy, because the penis is relatively short, the foreskin wrap the entire head of the penis, there may be extra. By the age of ten, due to the continuous growth and extension of the penis, the foreskin is slowly turned upwards, exposing the whole or part of the glans to the urethra. If it is young hair