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.
Causes of erectile dysfunction. Erectile dysfunction (ED) can have many causes, such as certain medical conditions, medications and stress. It's important to identify the cause of erectile dysfunction and treat any underlying conditions.edicine. In some men, certain medicines can cause erectile dysfunction, including: 1  diuretics â these increase the production of urine and are often used to treat high blood pressure (hypertension), heart failure and kidney disease. 2  antihypertensives â such as beta-blockers, that are used to treat high blood pressure.