Patient's question:
I usually experience abnormal penile erection between 1 and 5 o'clock, with different times each day. After waking up, I must get out of bed and walk for the penis to return to normal. Otherwise, even if I'm awake, it remains hard.Doctor's answer:
Erectile dysfunction can be classified as primary, secondary, or psychogenic. In terms of hemodynamics, it can be divided into two distinct types: low-flow (ischemic) and high-flow (non-ischemic). Since low-flow states are caused by venous obstruction and high-flow states are due to increased arterial blood flow, Witt et al. (1990) proposed a new classification: veno-occlusive and arterial.