Erectile Dysfunction: A Comprehensive Review of Pathophysiology, Diagnosis and Contemporary Management

: Erectile dysfunction (ED) is a common multifactorial condition with significant physical, psychological and relational consequences. While historically associated with aging, its rising prevalence among younger men underscores the need for updated diagnostic and therapeutic frameworks. This narrative review synthesizes contemporary evidence on the pathophysiology, diagnostic workup and management of ED, with emphasis on guideline-directed care and emerging treatment modalities. A comprehensive literature search was conducted, with evidence synthesized from key clinical guidelines, landmark trials and recent peer-reviewed studies. Lifestyle optimization remains the foundational step, followed by first-line pharmacotherapy with phosphodiesterase type 5 inhibitors (PDE5is), which demonstrate high efficacy and safety across diverse patient populations. For patients with inadequate PDE5is response, second-line options include alprostadil (intracavernosal, with approximately 70% success rates or intraurethral), vacuum erection devices and penile prosthesis surgery, with patient and partner satisfaction exceeding 95% for the latter when performed in experienced centers. Psychosexual therapy is an integral adjunct, particularly in psychogenic or mixed etiologies. Regenerative approaches such as low-intensity extracorporeal shockwave therapy (Li-SWT) and platelet-rich plasma (PRP) injections are under investigation; current evidence supports their use only in experimental settings due to limited long-term data. A multidisciplinary, individualized strategy-incorporating pharmacologic, surgical and psychosocial interventions-remains the cornerstone of modern ED management. This review critically distinguishes well-established evidence from ongoing clinical debates and translates findings into practical guidance for daily practice. Ongoing technological advances may further refine diagnostic accuracy and treatment personalization, but high-quality studies are needed to establish the role of regenerative and digital tools.