The best replacement for anosognosia is denial.

The best alternatives to anosognosia are rated as following:
★★★★★  denial
★★  agnosia
★★  anosodiaphoria
★  asomatognosia

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Speaking about anosognosia, one probably shouldn't forget about hemiplegia.

Other search terms related to anosognosia and their ratings are:
★★★★★ hemiplegia
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anosognosia
denial
agnosia