The Collaborative International Dictionary of English v.0.48:

mercurialism \mer*cu"ri*al*ism\, n. [Mercurial + -ism.] (Med.)
   The syndrome produced by poisoning due to exposure to
   mercury, it fumes, or its compounds; mercury poisoning.
   Such exposure may occur in mining or smelting, or in using
   mercurial compounds.
   [1913 Webster]

WordNet (r) 3.0 (2006):

mercury poisoning
    n 1: a toxic condition caused by ingesting or inhaling mercury;
         acute mercury poisoning causes a metallic taste and
         vomiting and diarrhea and kidney problems that may lead to
         death

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "mercury poisoning":
   Minamata disease, altitude sickness, anoxemia, anoxia,
   anoxic anoxia, anthrax, black lung, caisson disease, chilblain,
   decompression sickness, frostbite, immersion foot, itai, jet lag,
   lead poisoning, motion sickness, pneumoconiosis,
   radiation sickness, radionecrosis, red-out, sunstroke, the bends,
   trench foot