In former days, information obtained from randomized well-controlled clinical trials and epidemiological
studies on premature ejaculation (PE) was not available, thereby hampering the efforts of the consecutive
DSM Work Groups on Sexual Disorders to formulate an evidence-based definition of PE. The current DSM-IVTR
definition of PE is still nonevidence based. In addition, the requirement that persistent self-perceived PE,
distress, and interpersonal difficulties, in absence of a quantified ejaculation time, are necessary to establish the
diagnosis remains disputable.
Aim.