adrenal insufficiency
C2CEFR level
88/100Rarity: very rare
TechnicalRegister
A condition in which the adrenal glands fail to produce enough cortisol, causing fatigue, low blood pressure and collapse.
We suspected adrenal insufficiency because of his low sodium and unexplained hypotension.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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