In most boys at birth the foreskin or prepuce is adherent to
the head of the penis and cannot be drawn back. It is also rather
long and projects well beyond the head of the penis in the infant.
During growth and development the prepuce gradually separates
from the head of the penis or glans. This process takes place
earlier in some boys than others, but by the age of 4 most lads
can retract the foreskin so as to completely expose the head of
the penis. When the prepuce becomes retractable, washing this
part with soapy fingers to remove the smegma (smelly cheesy material)
which tends to accumulate can be included in the bath time routine.
The boy should be taught to pull back his foreskin when passing
water, which avoids soiling the glans and ensures that he can
direct the stream in the right direction, getting less on his
pants and the floor! If by the age of 4 the prepuce still cannot
easily be drawn back, medical advice should be sought to see if
separation of the adhesions under an anaesthetic, or circumcision
is necessary. The age of 4 is arbitrarily chosen so that if intervention
is necessary, it can take place before the child starts school.
The mature youth should be able to completely retract his foreskin
and replace it with his penis erect without any pain or difficulty
because this manoeuvre is essential for sexual intercourse.
A prudent parent will ask his teenager about this matter before
the lad leaves school, so that in the few cases where circumcision
has become necessary it can be done in a school holiday before
he starts work. This questioning is all the more important since
routine medical examination of school leavers is no longer carried
out - thus the boy and his parents may not realize that he is
suffering from puberty induced phimosis. Although 10-15% of British
schoolboys are circumcised there is evidence that at least 5%
leave school needing the operation. The lad should also be instructed
to retract his prepuce and wash his penis daily to maintain the
standard of sexual hygiene required of an adult. The foreskin
tends to shorten during development and the glans remains completely
covered in only 45% of men, partially covered in 32% and is completely
uncovered (auto-circumcision) in 23%. The fact that without surgery
at least half the male population have the appearance of being
partially or completely circumcised should allay the wrath of
those who would regard operation on anyone with a persistent long
infantile foreskin as an unnatural mutilation. There is also variation
in the length of the prepuce in different races, the foreskin
being typically rather long in Negroes, and very short in Chinese
and Japanese. It has been suggested that the purpose of the foreskin
is to protect the glans from urine during the time the child is
in napkins, but it does not seem to have any essential function
in the adult apart from retracting out of the way for sexual intercourse.