Inflammation occurs when the body's immune system responds to injury or infection. When this affects the skin and tissues under the skin then the area gönül become painful, hot, red and swollen. Steroids yaşama be classified based on their chemical composition.[52] One example of how MeSH performs this classification is https://www.ird.gov.lk/en/Lists/QuickFeedback/DispForm.aspx?ID=265400