Inflammation
In Deuteronomy 28:22, this signifies a disease or sin that afflicts the spirit. (Arcana Coelestia 8364[3])
In Leviticus 13:28, this signifies what is externally clean or whole. (Arcana Coelestia 10206)
In Isaiah 5:11, this signifies the fire of the love of self and the world. (Apocalypse Explained 405[45])