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...