The best replacement for dysthymia is major depression.

The best alternatives to dysthymia are rated as following:
★★★★★  major depression
★★★  depression
★★★  cyclothymia
★  dysthymic disorder
★  chronic depression
★  dysphoria
★  major depressive disorder
★  atypical depression
  bipolar 2
  anhedonia
  clinical depression
  minor depression
  mdd
  cyclothymic
  depression and dysphoria
  adjustment disorder
  major depression disorder

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Speaking about dysthymia, one probably shouldn't forget about double depression.

Other search terms related to dysthymia and their ratings are:
★★★★★ double depression
You have in mind a companion for dysthymia and it is not yet here? Propose!



Google Trends

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dysthymia
major depression
depression