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.
Physical causes are the main reasons for erectile dysfunction. They include heart disease, high blood pressure, diabetes, neurological disease, medication side effects, and other health conditions. Psychological causes of erectile dysfunction include anxiety, depression, stress, and problems in relationships.rectile dysfunction (ED), formerly called impotence, can affect men of all ages, although it is much more common among older men. It is normal for healthy men of all ages to occasionally experience erectile dysfunction.