RELATED: 
  
  Why does rabies cause hydrophobia? 
  
  Agony, Hydrophobia and viruses in the light of evolutionary principles


Has hydrophobia been found outside of rabies?

I have only seen it being mentioned as a symptom of rabies.


Question: Word for the opposite of "hypochondriasis"
Answer: I think egosyntonic comes reasonably close:


  Egosyntonic is a psychological term referring to behaviors, values, feelings that are in harmony with or acceptable to the needs and goals of the ego, or consistent with one's ideal self-image.





  Many personality disorders are considered to be egosyntonic and are, therefore, difficult to treat. Anorexia nervosa, a difficult-to-treat Axis I disorder, is also considered egosyntonic because many of its sufferers deny that they have a problem.


Its counterpart is egodystonic.