Chronic appendicitis usually refers to a milder form of the illness. Chronic appendicitis is very rare and its symptoms are less pronounced, in some cases even undetectable.

Judging by its gravity and rate of development, appendicitis can be either chronic or acute. Acute appendicitis is very common and it is characterized through intense symptoms and fast rate of progression. Chronic appendicitis has a very low incidence in people and it is characterized through milder, almost unperceivable symptoms and a slow rate of progression. The general symptoms of appendicitis have an unspecific character. While acute appendicitis is considered to be difficult to detect, chronic appendicitis is almost impossible to detect relying only on the patients