The child with atopic dermatitis is prone to combined viral or bacterial infections. 1, viral infection (1) herpes simplex virus atopic dermatitis children in close contact with patients with herpes simplex is prone to occur, good to occur in children with atopic dermatitis within 1 year of age, manifested by the sudden appearance of dense shiny flat blisters at the original eczema lesions, soon turned into pustules, central umbilical concave, surrounding red halo, mostly in the head and face, other parts of the dissemination. It is accompanied by systemic symptoms such as fever, loss of appetite and enlarged superficial lymph nodes, and may leave scars after healing. Active antiviral treatment and healing are good. (2) Infectious molluscum contagiosum Atopic dermatitis children are susceptible to infectious molluscum contagiosum virus, manifesting itself in the form of rice grain size skin colored papules, indicating smooth, central umbilical concave, squeezing the lesions can be seen inside the molluscum contagiosum small body, no conscious symptoms, if individual lesions infected will appear itchy. Molluscum contagiosum is mostly surrounded by eczema damage. You can go to the hospital to see a doctor by squeezing warts and other ways to remove, otherwise there will be autoinfection, more and more. 2, bacterial infection Staphylococcus aureus is the common main bacteria of skin infections. In atopic dermatitis patients with skin lesions and normal skin Staphylococcus aureus detection rate are higher than normal people. In patients itching and scratching, Staphylococcus aureus can lead to aggravation of lesions in some patients and even cause impetigo or staphylococcal scald-like syndrome, manifested as erythematous lesions, oozing, with pustules and yellow scabs. Treatment should be supplemented with antibiotic drugs such as Bactrim or fusidic acid cream applied topically, and antibiotics can be used internally for acute generalized lesions.