Dermatitis, including eczema, is a relatively common clinical allergic skin disease that is primarily the result of contact irritation or allergy. Dermatitis can appear as erythema, papules, and flaking on the skin, and patients have more pronounced itching symptoms. Dermatitis is usually not combined with bacterial infection, so there is no need for anti-inflammatory medication or topical anti-inflammatory drugs. If the patient scratches and causes dermatitis combined with bacterial infection, or even local erosion, exudation, pus formation, pus crust, etc. to take oral anti-inflammatory drugs anti-bacterial infection treatment, such as oral amoxicillin or cephalosporin, local can be applied topical fusidic acid cream, compound polymyxin B ointment and other anti-bacterial infection treatment.