DMPS can reverse the features of severe mercury vapor-induced neurological damage.

CASE REPORT: A 36-year-old jewelry producer presented with tremor, slurred speech, lethargy, headache, and incoordination. On examination he had a coarse tremor of the outstretched hands and protruded tongue, slurred speech, "Hatter's shakes" handwriting, impaired heel-toe walking and heel-shin coordination, mild dysdiadochokinesis, and constricted visual fields to confrontation. The patient received four 5-day courses of oral 2,3-dimercapto-1-propanesulfonate (30 mg/kg/day), which was associated with substantial objective clinical improvement and the excretion of 99,406 microg mercury.

CONCLUSION: We recommend that the administration of 2,3-dimercapto-1-propanesulfonate should be considered in symptomatic patients who have been exposed to mercury vapor and who have supporting analytical confirmation of the diagnosis.