The present invention relates to the treatment of autoimmune and/or inflammatory diseases associated with overexpression of Toll-like receptor 3 (TLR3) as well as Toll-like receptor 4 (TLR4) and/or TLR3/TLR4 signaling in nonimmune cells, monocytes, macrophages, and/or dendritic cells in association with related pathologies. This invention also relates to the use of phenylmethimazoles, methimazole derivatives, and tautomeric cyclic thiones for the treatment of autoimmune and inflammatory diseases associated with Toll-like receptor 3 (TLR3) as well as Toll-like receptor 4 (TLR4) and/or TLR3/TLR4 signaling in nonimmune cells, monocytes, macrophages, and/or dendritic cells in association with related pathologies. This invention also relates to treating a subject having a disease or condition associated with abnormal Toll-like receptor 3 as well as Toll-like receptor 4 and/or TLR3/TLR4 signaling in nonimmune cells, monocytes, macrophages, and/or dendritic cells in association with related pathologies. The present invention also relates to the treatment of autoimmune-inflammatory pathologies and chemokine and cytokine-mediated diseases associated with TLR overexpression and signaling. This invention also relates to pharmaceutical formulations capable of inhibiting the IRF-3/Type 1 IFN/STAT/ISRE/IRF-1 pathway associated with Toll-like receptor overexpression or signaling.