The causes of inflammation include infectious factors such as bacteria, viruses, parasites and non-infectious factors such as trauma and radiation. 1. Infectious factors: If you are affected by infectious factors such as bacteria, viruses, parasites, etc., they will stimulate the body’s tissues and activate the body’s immune system to produce an immune response, which will cause the release of inflammatory factors and lead to inflammation. 2. Non-infectious factors: If not infected by pathogens, but there are other external stimuli, including trauma, surgery, radiation, drugs, etc., can also cause the human immune system to be activated, thereby activating the body’s inflammatory response. Inflammation may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.