of the foreskin
of the human penis
The term "posthitis" (pronounced pos-THI-tis) comes from the Greek "posthe" meaning foreskin + "-itis" meaning inflammation = inflammation of the foreskin.
In the uncircumcised male, posthitis and balanitis
(inflammation of the glans, the rounded head of the penis) usually occur together as balanoposthitis: inflammation of both the glans and foreskin. Circumcision
prevents balanoposthitis. Without a foreskin, there can of course be no posthitis and hence no balanoposthitis.
Prevention in uncircumcised men
Hygiene, in particular cleaning the glans of the penis, is generally considered sufficient to prevent infection and inflammation of the foreskin. Full retraction of the foreskin may not be possible in boys younger than about ten years.