One is said to have Phimosis when one is unable to retract (move) the foreskin behind the penis head (glans) along with:
• difficulty in passing urine,
• painful urination,
• painful erection, or
• When the foreskin is behind the head of the penis and cannot be moved forward (Paraphimosis).
It is diagnosed by a doctor by taking detailed history and physical examination. No other tests are usually needed.
In uncircumcised adult men it happens due to infection, inflammation, or scarring.
Phimosis is also sometimes present at birth .Most children will not have a fully retractable foreskin at birth, but as they get older the foreskin becomes retractable.