What are the types of inflammation?

There are two main types of inflammation:

1. Acute inflammation: This type of inflammation occurs rapidly and is typically short-lived. It is a normal response to injury or infection and is characterized by symptoms such as redness, swelling, heat, and pain. Acute inflammation is a protective response that helps the body to heal and defend itself against harmful stimuli.

2. Chronic inflammation: Chronic inflammation is a prolonged and persistent inflammatory response that can last for weeks, months, or even years. It can be caused by a variety of factors, including autoimmune disorders, chronic infections, obesity, and long-term exposure to irritants such as tobacco smoke. Chronic inflammation can lead to tissue damage and is associated with a number of chronic diseases, including heart disease, diabetes, and cancer.

Acute inflammation

- Rapid onset, usually within hours
- Short duration, typically resolves within a few days
- Characterized by:
- Vasodilation and increased blood flow
- Exudation of fluid and leukocytes into the affected area
- Pain, redness, swelling, and heat

Chronic inflammation

- Slow onset, can last for weeks, months, or years
- Characterized by:
- Infiltration of lymphocytes and macrophages
- Proliferation of connective tissue
- Tissue destruction and fibrosis

Types of chronic inflammation

- Granulomatous inflammation: Characterized by the formation of granulomas, which are collections of macrophages surrounded by a ring of lymphocytes.
- Interstitial inflammation: Characterized by inflammation within the connective tissue.
- Ulcerative inflammation: Characterized by erosion of the epithelial surface.
- Necrotizing inflammation: Characterized by tissue death.