Addison’s disease vs Cushing syndrome can feel like a maze of arrows, hormones, and “wait, which one is high?” moments. We cut through the noise by building the whole story from the ground up: what the adrenal glands do, which adrenal cortex hormones actually matter for exams and clinical reasoning, and how one simple feedback loop explains most of the lab patterns you’ll see.

We walk through aldosterone (the salt hormone) and cortisol (the stress hormone) in plain language, then map the HPA axis step by step: stress triggers CRH, CRH triggers ACTH, and ACTH triggers cortisol. From there, everything becomes a logic problem. If cortisol is high, what should ACTH do? If cortisol is low, what does the pituitary try next? We also clarify the key difference between Cushing disease (pituitary-driven, ACTH high with cortisol high) and Cushing syndrome (adrenal or exogenous steroid source, ACTH low with cortisol high), and we contrast that with primary vs secondary Addison’s patterns.

You’ll leave with practical memory tricks, a clearer way to think about endocrine disorders, and a framework you can reuse for questions on cortisol, ACTH, and adrenal gland physiology. Check the links for free Addison’s and Cushing’s practice questions, then subscribe, share the episode with a classmate, and leave a review so more nursing students can find it.

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