Acute inflammation is the body's immediate response to injury or infection. It involves the activation of the immune system, which sends white blood cells and other substances to the affected area. This process helps to eliminate harmful agents, such as bacteria or viruses, and promotes healing. Common signs of acute inflammation include redness, swelling, heat, and pain. This type of inflammation typically occurs quickly and lasts for a short duration, usually a few days to a couple of weeks. It is a crucial part of the healing process, allowing the body to recover from injuries or infections effectively. If inflammation persists, it may lead to chronic inflammation, which can cause further health issues.