Abstract
A 8-year-old male mix cat presented with fever, lymphadenopathy, polyarthitis, scaly erythema and alopecia on the face, pinnae, and pads. Histopathological examination showed liquefaction and inflammation of mononuclear cells at the superficial dermis and periappendages. X-ray in the carpal and tarsal articulations revealed bone resorption. Blood test showed only leukocytosis. FeLV and FIV were negative, and the antinuclear antibody titer was not high. Urine test revealed no abnormality. Based on these findings, incomplete Systemic Lupus Erythematosus was suspected. Skin lesions were not improved with oral predonizolone 5 mg/kg BID, but responded well with oral triamcinolone 4 mg/kg BID.