How can men know if they have phimosis or redundant prepuce?

Phimosis refers to a condition in adult males where the foreskin covers the glans penis, preventing it from being fully exposed. It can be further classified into true phimosis and pseudo-phimosis. True phimosis occurs when the glans cannot be fully exposed even during penile erection. Pseudo-phimosis refers to cases where the glans is not fully exposed when flaccid, but can become fully exposed upon erection. Paraphimosis refers to a condition where the opening of the foreskin is so narrow that the glans is completely covered and cannot be exposed at any time.