Abstract: A 53-year-old female presented with erythema and pustules on the lower abdomen, neck, elblow, etc. and buttocks attributed to break the thermometer 5 days prior to this presentation. Previous history of red mercury allergy. Blood mercury determination after 12, 20, 30 days of exposure respectively: 0.11 mg/L, 0.005 mg/L, 0.002 mg/L. The patient was diagnosed with baboon syndrome and received glycyrrhizin, ibastine tablets, levcetirizine hydrochloride and olotadine hydrochloride. After the treatment for one week, erythema subsided, pustules dried up, and the skin lesions appeared a lot of peeling.

Key words: mercury, baboon syndrome