Inflammation is caused by inflammatory factors (e.g., biological factors, physicochemical factors, allergic reactions, foreign bodies, etc.). Inflammatory factors are any factors that can cause tissue and cell damage, biological factors such as bacteria, viruses, etc.; physicochemical factors such as high temperature, mechanical damage, etc.; allergic reactions such as allergic rhinitis, anti-basement membrane glomerulonephritis, etc.; and a variety of foreign objects entering the body such as metals. Inflammation is the body’s self-defense response to certain stimuli, which can cause local tissues to produce redness, swelling, heat, pain or dysfunction, etc., and can also produce systemic reactions such as fever, malaise and other symptoms. If the patient has localized redness, swelling, heat, pain, etc. or systemic reaction such as fever, malaise, etc. due to inflammation, the patient should consult a doctor in time to find out the cause of the disease, and treat according to the doctor’s instructions to avoid delaying the condition.