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Abstract

Volume 20, Issue 4 (July 2018) 20, 330–335; 10.4103/aja.aja_62_17

Penile sensory thresholds in subtypes of premature ejaculation: implications of comorbid erectile dysfunction

Xiang Chen1,2, Fei-Xiang Wang3, Chao Hu1,2, Nian-Qin Yang2, Ji-Can Dai1

1 Department of Urology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, China
2 Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
3 Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China

Correspondence: Dr. JC Dai (jican_dai@aliyun.com) or Dr. FX Wang (wangfx@ssfjd.cn)

Date of Submission 17-Jun-2017 Date of Acceptance 21-Oct-2017 Date of Web Publication 06-Feb-2018

Abstract

Penile hypersensitivity plays an important role in premature ejaculation (PE), but differences in penile sensitivity among subtypes of PE are unknown. Therefore, we compared penile sensory thresholds in PE subtypes of lifelong and acquired PE, PE with and without erectile dysfunction (ED), PE with an intravaginal ejaculation latency time ≤1 min and >1 min, and PE with and without orgasmic pleasure perceptual dysfunction. During August 2014 to January 2016, 136 patients with PE were included. Penile warm, cold, and vibratory thresholds were measured. Data of clinical characteristics, sexual life, Premature Ejaculation Diagnostic Tool (PEDT) score, and the 5-item version of the International Index of Erectile Function (IIEF-5) score were collected. Vibratory thresholds of the PE with ED group were higher in the right coronal sulcus (median amplitude: 4.92 vs 3.65 μ m, P = 0.02) and the right penile shaft (median amplitude: 3.87 vs 3.30 μ m, P = 0.03), while differences in penile sensory thresholds between other subtypes were not significant. The median PEDT score was lower in the PE without ED group (12 vs 14, P < 0.001). The IIEF-5 and PEDT scores were negatively correlated (r = −0.29, P < 0.001). Patients with orgasmic pleasure perceptual dysfunction had a lower median IIEF-5 score (20 vs 21, P = 0.02). Patients with PE and ED had lower penile sensitivity, and ED was associated with more severe symptoms and weaker orgasmic pleasure perception. In men with PE, management of comorbid ED is necessary. In case of side effects in erectile function, topical anesthetics should be cautiously used in men with PE and ED.

Keywords: classification; erectile dysfunction; penile sensitivity; penis; premature ejaculation; sensory thresholds

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