TLR7 and Psoriasiform dermatitis: Imiquimod (IMQ), a frequently used inducing agent in modeling psoriasiform dermatitis, has been reported to elevate Ca2+ influx by both TLR7-dependent and independent mechanisms [67,68,69,70,71,72], and IMQ also has been reported to increase intracellular free calcium level by a TRPA1-dependent, but not Transient Receptor Potential Vanilloid-1 (TRPV1)-dependent mechanism [73].