belle indifference

la belle in·dif·fér·ence

(lah bel an-dif-er-ahns'),
A naive, inappropriate calmness or lack of concern in the face of perceptions by others of one's disability, often seen in those with conversion disorder but no longer considered pathognomonic for conversion disorder. Compare: anosodiaphoria.
[Fr.]

la belle in·dif·fér·ence

(lah bel ahn'dēf-ār-ahns')
A naive, inappropriate lack of emotion or concern for the perceptions by others of one's disability, typically seen in persons with conversion hysteria.
[Fr.]

belle indifference

An inappropriate lack of emotional response to claimed severe disablement or incapacitating symptoms in HYSTERIA.
References in periodicals archive ?
Bien heureusement, l'homme de lumiere eclairee ne se laisse pas decontenancer par la belle indifference de l'ecrivaine francaise et en homme courageux, temeraire et doue d'elegance, il revient a la charge et tente, par mille et un detours, de gagner son estime et son [beaucoup moins que] intime [beaucoup plus grand que].
This belle indifference is neither disinterest nor bohemian ennui but rather the expression of the dissolution of any and every totalization.
He was genuinely concerned about his hiccuping, which is far from la belle indifference that a patient with a conversion disorder would give you.
The la belle indifference could also be viewed as stoicism or denial in general medical conditions as well, a consideration to always be aware of when undertaking the differential diagnosis.