TY - CHAP M1 - Book, Section TI - Anti-Inflammatory Agents A1 - Baumann, Leslie PY - 2015 T2 - Cosmeceuticals and Cosmetic Ingredients AB - In the 1st century CE, Cornelius Celsus described the signs of acute inflammation as: calor (heat), dolor (pain), rubor (redness) and tumor (swelling).1 This accurate depiction of the sequence of events that occurs in inflammation is characteristic of all types of inflammation regardless of the provocative stimuli, which can include injury, friction, emotion, exposure to irritants or allergens, or infectious agents.2 The initial insult to the skin causes vasodilation that is seen as redness. The endothelial lining of the blood vessels becomes more permeable and leads to extravasation. In other words, substances leak out of the vessel causing increased fluid in the tissues, which results in swelling. Inflammatory mediators such as cytokines and interleukins are released and activate multiple pathways that can lead to pain, redness, and swelling as well as serve to beckon immune cells to the area. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - dermatology.mhmedical.com/content.aspx?aid=1174543481 ER -