How was your friend treated? Has she/he recovered? Is AI the same as adrenal fatigue?
Sorry for so many question, but I am on the rifampin myself (longterm) and wonder if some of my symptoms could be assigned to AI.
She was treated in the hospital with IV steroids and then her antibiotic was changed. She still has adrenal insufficiency and takes a daily replacement dose of hydrocortisone to replace what her body is no longer able to make. To be clear, the antibiotic did not cause the adrenal insufficiency but the higher cortisol demands upon the adrenals exposed it.
Adrenal insufficiency is a label recognized by medical professionals and it means something specific in terms of the adrenals ability to respond (or not) to ACTH produced in the brain.
Long before most people present with AI, they may display symptoms of HPA axis dysfunction which some doctors will call adrenal fatigue.
I personally hate the term adrenal fatigue because so many doctors associate it with quackery and disregard the real symptoms infection can cause in dysregulating the endocrine system.
I would consider doing a saliva cortisol test to see how much cortisol your adrenals are producing across the day if you are concerned about your levels.
Ema