TSLP and atopic eczema: Type‐2 (T2) inflammation plays a key role in both asthma [2] and atopic dermatitis [3], and key T2 cytokines such as interleukins (IL) 4, 5, and 13, and epithelial alarmins such as thymic stromal lymphopoietin (TSLP) and IL33 drive inflammation.