Colitis may differ by the cause of development, course, and extent of the inflammatory process. Such a division helps to clarify the diagnosis and determine the optimal treatment tactics.
According to the cause of development, the following are distinguished:
- infectious — occurs as a result of bacterial, viral, or parasitic infections;
- ischemic — associated with impaired blood supply to the intestinal wall;
- medication-induced — develops as a reaction to taking medications;
- alimentary — associated with prolonged dietary errors or irritation of the mucous membrane.
According to the course, the following are distinguished:
- acute — characterized by sudden onset and pronounced symptoms;
- chronic — has a prolonged course with periods of exacerbation and remission.
Also, in clinical practice, the extent of inflammation is taken into account — it may be limited to certain parts of the large intestine or involve a significant part of it. For example, when the distal parts of the large intestine are affected, colitis of the rectum may develop.
A separate group consists of chronic inflammatory diseases of the large intestine, which include ulcerative colitis. Such conditions have a complex mechanism of development and require a special approach to treatment.