The term phimosis is used when the prepuce cannot be reytracted behind the glans. This condition is oresent in almost all newborns, fulfilling mostly a protective function. In childhood, a gradual separation occurs, which is completed in adolescence. Through this process, complications may happen such as urinary tract infections, balanitis, or paraphimosis. Circumcision has been considered the treatment of choice, although some factors must be weighed: degree of narrowing, complications, opinión and religious beliefs of the parents. In the past 15 years, publications have suggested topical steroids as an alternative treatment, with variable success. Treatment of phimosis will continue to be controversial.