Patient's question:
Patient is male, 71 years old, in good health.Current condition:
1. Difficulty urinating, persistent penile erection.
Doctor's answer:
Erectile dysfunction is caused by certain stimuli that lead to persistent dilation of the deep arteries of the corpora cavernosa and persistent contraction of the veins, resulting in a sustained state of congestion. This further affects blood circulation within the vessels and oxygen exchange, leading to increased carbon dioxide tension. Clinically, it may present with significant swelling and pain in the penis. If left untreated, it can cause blood stasis, increased blood viscosity, and more difficult venous, potentially even forming thrombi and localized masses (lasting more than 2 days), with severe venous obstruction.