horse chestnut. n. 1. Any of several trees of the genus Aesculus, especially the European species A. hippocastanum, having opposite, palmately compound leaves, erect clusters of white flowers tinged with red or yellow, and spiny or smooth capsules containing large shiny brown seeds.
Painful erections are very uncommon unless you have recently experienced penile trauma or irritation. Other causes of erectile pain would include: 1  Peyronie's disease. 2  Penile mass. 3  Priapism. 4  Phimosis. 5  Penile Injury.
2 doctors agreed: Treatment is cause: It's not typically the cancer itself that causes erectile dysfunction, but the treatment for the cancer that can cause it. The treatments for the following cancers have a higher likelihood of causing ed: bladder cancer, colon cancer, rectal cancer, and prostate cancer.