Obstructive uropathy in the male

The conditions causing voiding symptoms in neurologically normal men are multifactorial; they comprise urethral obstruction, impaired detrusor contractility, detrusor instability, and sensory urgency. Urethral obstruction may be because of BPH, primary vesical neck obstruction or a learned voiding dysfunction. In order to distinguish between these conditions, simultaneous detrusor pressure and uroflow studies are necessary.