Clinical characteristics and penile afferent neuronal function in patients with primary delayed ejaculation

Area of Science:

• Urology
• Neuroscience
• Sexual Medicine

Background:

• Primary delayed ejaculation (DE) is an uncommon condition with limited research.
• Understanding the clinical and neurophysiological aspects of primary DE is crucial.

Purpose of the Study:

• To investigate the clinical characteristics of primary DE.
• To assess penile afferent neuronal function using somatosensory evoked potentials in primary DE patients.

Main Methods:

• Compared 24 primary DE patients with 24 age-matched controls.
• Utilized somatosensory evoked potentials (SEPs) to evaluate penile sensory function.
• Assessed clinical parameters including masturbatory activity, night emissions, intravaginal ejaculation latency time (IELT), anxiety, and depression.

Main Results:

• Primary DE patients exhibited higher masturbatory frequency, lower night emissions, longer IELT, and increased anxiety/depression.
• Penile shaft sensory thresholds were significantly higher in DE patients.
• Dorsal nerve somatosensory evoked potential (DNSEP) latencies were longer and amplitudes lower in DE patients, indicating hypoexcitability and hyposensitivity of the penile shaft.

Conclusions:

• Primary DE is associated with penile shaft hyposensitivity and hypoexcitability, not glans hyposensitivity.
• Specific masturbatory techniques may contribute to primary DE.
• Psychological factors like anxiety and depression are linked to primary DE.