Penile Sensitivity in Men with Premature Ejaculation

Jeong, Hyeon; Park, Moon Soo; Paick, Jae Seung

Abstract

INTRODUCTION: Premature ejaculation is the most prevalent form of male sexual dysfunction, but its cause has not been well established. Recently some studies indicated that penile sensitivity is decreased in men with premature ejaculation.
MATERIALS AND METHODS
To clarify the association between penile sensitivity and premature ejaculation, we evaluated penile sensitivity in 18 patients with premature ejaculation without erectile dysfunction and neurologic deficit, and 15 normal potent male volunteers by SMV-5 digital vibrometer (Teknologue, Tokyo, Japan), which has higher precision and reproducibility than analogue type biothesiometers. Vibration thresholds were recorded at the glans penis, penile shaft, and frenulum of the penis in flaccid and erectile state induced by PGE1 10 ug. We also recorded those at ulnar process and medial maleolus of the tibia.
RESULTS
There was no difference in vibration threshold at the ulnar process and the medial maleolus of the tibia between the two groups (p>0.05). And we found no difference in penile sensitivity at the glans penis, penile shaft, frenulum of the penis between the two groups, in both erectile and flaccid states (p>0.05). Penile sensitivity was decreased in erectile state compared to flaccid state, but it is not statistically significant (p>0.05).
CONCLUSION
Based on our results, penile hypersensitivity measured by SMV-5 vibrometer does not appear to be a major factor contributing to premature ejaculation. And further study aimed at other somatic or cognitive factors awaits implementation.