Overactive bladder in the male patient: bladder, outlet, or both?

Area of Science:

• Urology
• Men's Health
• Lower Urinary Tract Symptoms (LUTS) Pathophysiology

Background:

• Traditionally, infravesical (prostatic) obstruction has been presumed as the primary cause of LUTS in men.
• Secondary effects of obstruction on the bladder were considered when direct obstruction couldn't explain symptoms like urinary urgency and frequency.
• Emerging concepts challenge these traditional explanations, suggesting primary bladder pathology may be causative in a subset of men.

Purpose of the Study:

• To review the physiologic and clinical observations explaining the mechanisms underlying LUTS in men.
• To present evidence supporting two distinct etiological concepts for LUTS.
• To contrast the traditional view of obstruction with the emerging concept of primary bladder pathology.

Main Methods:

• Literature review focusing on studies investigating LUTS mechanisms.
• Analysis of data sets supporting infravesical obstruction as a cause of LUTS.
• Analysis of data sets supporting primary bladder abnormality as a cause of LUTS.

Main Results:

• Evidence exists supporting infravesical obstruction as a causative factor for LUTS.
• Evidence also supports primary bladder abnormalities as a cause for LUTS in certain patient subsets.
• The pathophysiology of LUTS may be more complex than previously assumed.

Conclusions:

• The traditional explanation of LUTS solely due to infravesical obstruction may be incomplete.
• Primary bladder pathology represents a significant alternative or contributing factor to LUTS in men.
• Further research is needed to fully elucidate the diverse mechanisms underlying LUTS.