Is there an antonym to 'hypochondria'/'hypochondriac'? [duplicate]

Perhaps Anosognosia:

Anosognosia is viewed as a deficit of self-awareness, a condition in which a person who suffers a certain disability seems unaware of the existence of his or her disability.

Or Anosodiaphoria:

Anosodiaphoria is a condition in which a person who suffers disability due to brain injury seems indifferent to the existence of their handicap. Anosophoria is specifically used in association with indifference to paralysis. ... Joseph Babinski first used the term anosodiaphoria in 1914 to describe a disorder of the body schema in which patients verbally acknowledge a clinical problem (such as hemiparesis) but fail to be concerned about it. Anosodiaphoria follows a stage of anosognosia, in which there may be verbal, explicit denial of the illness, and after several days to weeks, develop the lack of emotional response. Indifference is different from denial because it implies a lack of caring on the part of the patient whom otherwise acknowledges his or her deficit.

Also see Word for the opposite of “hypochondria”