JAK: Janus kinase; NBUVB: narrowband ultraviolet B; TCI: topical calcineurin inhibitor; TCS: topical corticosteroid.
* Causes of nonresponse to topical therapy:¶ We define frequent flare-ups as those that require daily TCS therapy for more than 14 days per month (ie, continuous topical therapy is required for more than half the time). A prolonged flare-free interval is a period of at least 3 months in which the dermatitis is controlled without treatment or with only intermittent use of TCS or TCI.
Δ Children <6 months are not candidates for systemic therapies but can be considered for systemic therapies if the atopic dermatitis is still uncontrolled once they are >6 months.
◊ For discussion of cyclosporine dosing and monitoring, refer to UpToDate content on severe refractory atopic dermatitis.
§ Supplementation with folic acid 1 mg orally once daily is recommended to reduce methotrexate toxicity.