S1PR1 and Psoriasiform dermatitis: IMMH002, a recently developed oral S1PR1 modulator, reduces irritation in the SDS-induced psoriasis-like skin lesion mouse model, T lymphocyte infiltration of the imiquimod-induced psoriasiform dermatitis mouse model, and skin damage in the propranolol-induced psoriasis-like skin lesion guinea pig model [92].