IL interleukin, IMQ imiquimod, JAK Janus kinase, NAPSI Nail Psoriasis Severity Index, NF-κB nuclear factor kappa-light-chain-enhancer of activated B cells, PASI Psoriasis Area Severity Index, STAT3 signal transducer and activator of transcription 3, Th T helper, INM-A an alkaloid-rich phytopharmaceutical prepared from Qing Dai. Here, STAT3 is linked to psoriasis.