Careful questioning of psychological stressors as well as blood tests to check for testosterone and glucose levels, a neurological assessment, and duplex doppler ultrasound to evaluate blood flow and atherosclerosis can be done to investigate the cause of erectile dysfunction.

仔细询问心理压力源、通过验血来检查睾酮和葡萄糖水平、神经学评估，及双功能多普勒超声评估血流量与动脉粥样硬化，可以帮助找寻勃起功能障碍的原因。