Inflammatory cytokines are small proteins that play a crucial role in regulating immune responses, particularly during inflammation. They act as messengers between cells and help to coordinate the body's response to injury or infection by promoting blood flow, increasing vascular permeability, and stimulating the activity of other immune system components such as white blood cells. Inflammatory cytokines are produced by various types of cells including macrophages, lymphocytes, and endothelial cells in response to tissue damage or pathogen invasion. They can also be released into the bloodstream where they help to recruit immune cells to the site of injury or infection. However, excessive production of inflammatory cytokines can contribute to chronic inflammation and various diseases such as rheumatoid arthritis, lupus, and multiple sclerosis. Therefore, understanding the role of these molecules is essential for developing effective treatments for inflammatory conditions.