1. (Plants) any N temperate fagaceous tree of the genus Castanea, such as C. sativa (sweet or Spanish chestnut), which produce flowers in long catkins and nuts in a prickly bur. Compare horse chestnut, water chestnut, dwarf chestnut. 2. (Cookery) the edible nut of any of these trees.
Another condition that is sometimes revealed by investigation of erythema nodosum is sarcoidosis. Drugs, including oral contraceptives, appear to be the cause of particular cases of erythema nodosum. In many cases, however, no clear cause can be found.
Erythema nodosum is a painful inflammation of the connective tissues beneath the skinâs surface.It is characterized by lumps or nodules beneath the skin that are about an inch across, and are firm, red and warm to the touch.rythema nodosum is a painful inflammation of the connective tissues beneath the skinâs surface.