Corona discharge Corona discharge A corona discharge is an electrical discharge brought on by the ionization of a fluid such as air surrounding a conductor that is electrically charged. Spontaneous corona discharges occur naturally in high-voltage systems unless care is taken to limit the electric field strength. A corona will occur when the strength of the electric field (potential gradient) around a conductor is high enough to form a conductive region, but not high enough to cause electrical breakdown or arcing to nearby objects. It is often seen as a bluish (or other color) glow in the air adjacent to pointed metal
Rectal discharge strictly speaking refers to something having a mucin-like attribute, but it often is used interchangeably with the word "mucous" (as mucus usually contains a high percentage of mucin). The differential diagnosis of rectal discharge is extensive, but the general etiological themes are infection and inflammation. Some lesions can cause a discharge by mechanically interfering with, or preventing the complete closure of, the anal canal. This type of lesion may not cause discharge intrinsically, but instead allow transit of liquid stool components and mucus. Perianal Crohn's disease is associated with fistulizing, fissuring and perianal abscess formation. After colostomy, the distal section