Peripheral neuropathy: an underdiagnosed cause of erectile dysfunction

Area of Science:

• Neurology
• Urology
• Andrology

Background:

• Erectile dysfunction (ED) is a common condition with multifactorial causes.
• The role of peripheral neuropathy in ED pathogenesis is often underestimated.
• Accurate assessment of neuropathy is crucial for effective ED management.

Purpose of the Study:

• To determine the prevalence of peripheral neuropathy in men with ED.
• To evaluate the reliability of clinical tools like the International Index of Erectile Function (IIEF-5) and Neuropathy Symptom Score (NSS) in identifying concurrent neuropathy.
• To explore the association between neuropathy and ED severity.

Main Methods:

• A cohort of 90 male patients with ED was recruited.
• Data collection included medical history, risk factors, IIEF-5 for ED severity, and NSS for neuropathy symptoms.
• Comprehensive neurophysiological tests were performed, including nerve conduction studies, evoked potentials, and quantitative sensory testing.

Main Results:

• Neurophysiological tests confirmed neurological pathology in 68.9% of patients, with peripheral neuropathy identified in 61.1%.
• Polyneuropathy was present in 37.8% and pudendal neuropathy in 14.4% of patients.
• More severe neuropathy correlated with lower IIEF-5 scores and increased need for aggressive therapies, and a strong association was found between neuropathy and NSS scores.

Conclusions:

• Peripheral neuropathy is a significant, underestimated factor in ED development.
• Combining clinical assessment with specialized neurophysiological protocols enhances diagnostic accuracy and prognostic evaluation for ED patients.
• Future clinical practice should prioritize assessing pelvic small fiber function in ED patients.