Validity of midday total testosterone levels in older men with erectile dysfunction.

Purpose: Based on studies showing the circadian rhythmicity of testosterone the optimal time of day to draw total testosterone in men has classically been reported as between 8 and 11 a.m. However, further studies demonstrated that the testosterone circadian rhythmicity becomes blunted with age.

Sexual impact of treatment of lower urinary tract symptoms associated with benign prostatic hyperplasia.

Lower urinary tract symptoms associated with benign prostatic hyperplasia (LUTS/BPH) and the treatment of these conditions are commonly associated with sexual dysfunction. The effects on sexual function of common medical and surgical therapies used in the treatment of LUTS/BPH are reviewed. Also discussed is the emerging use of phosphodiesterase inhibitors in the treatment of LUTS/BPH.