CCL20 and psoriasis: Proteins related to the central disease‐driving pathways of psoriasis, namely the TH1 (CCL3, CCL4, CXCL9, CXCL10, CXCL11, TNFα) and TH17 pathway (CXCL1, CCL20, IL‐17A, IL‐12B) were found elevated in lesional skin across both studies.