The Collaborative International Dictionary of English v.0.48:

Toxicomania \Tox`i*co*ma"ni*a\, n. [See. Toxic, and Mania.]
   1. (Med.) Toxiphobia. --A. S. Taylor.
      [1913 Webster]

   2. (Med.) An insane desire for intoxicating or poisonous
      drugs, as alcohol or opium. --B. W. Richardson.
      [1913 Webster]