Corticosteroids — the stress & swelling hormone, and the enormous price you pay for it
Every corticosteroid is a copy of cortisol — the hormone your adrenal glands make in a crisis. Give it and inflammation stops beautifully. Keep giving it and you slowly build a patient with iatrogenic Cushing's syndrome whose own adrenal glands have gone to sleep. Then the single most dangerous thing anyone can do is stop the drug suddenly — because the sleeping adrenals cannot restart in time, and the patient falls into adrenal crisis. That link is the whole point of this page: see NG-287 — Addison's vs Cushing's.
One drug switches off the inflammatory cascade at the very top — which is why it works on everything, and why it wrecks everything.
Anything inflamed, and anything that needs a stress response the body can't mount:
One drug, an adverse effect in nearly every body system. Long-term steroids create iatrogenic Cushing's syndrome.
Answer first: daily weight is the single most important thing this patient monitors.
Steroids suppress the immune response AND the signs of infection. The patient can be septic without a dramatic fever or a high white count.
Cortisol raises blood glucose by design — it mobilizes fuel for a crisis. So steroids raise the sugar of everyone, diabetic or not.
This is the one rule that turns a nuisance drug into a lethal one. Taper to let the adrenal glands wake up.
Weeks of exogenous steroid switch off CRH and ACTH, and the adrenal cortex atrophies. Remove the drug in one step and the body has no cortisol at all — it cannot maintain blood pressure, blood sugar or sodium.
The result is acute adrenal insufficiency (adrenal crisis): hypotension progressing to shock, hypoglycemia, hyponatremia, hyperkalemia, vomiting, weakness and collapse.
Recovery of the axis can take weeks to many months after long courses — which is why tapers can be slow and why patients on chronic steroids need stress dosing long after the drug is stopped.
Most steroid questions are testing one of four things: taper, infection, weight, or sugar.
| ✅ Shows understanding | ❌ Needs more teaching |
|---|---|
| "I will not stop this medication suddenly — I'll follow the taper." | "When I feel better I'll just stop taking it." |
| "I'll report any fever or signs of infection right away." | "A little fever is expected on steroids." |
| "The most important thing to monitor is my weight — daily." | "I'll weigh myself once a week." TOO INFREQUENT |
| "I'll call if I gain a pound in a day or a few pounds in a few days." | "New swelling in both feet is normal on this drug." |
| "I'll take it in the morning with food." | "I'll take it at bedtime on an empty stomach." |
| "I'll tell the surgeon and dentist that I take steroids, and ask whether the dose should go up." | "I should stop it before surgery so it doesn't interfere." |
| "I'll check my blood sugar more often." | "I'll call the doctor immediately for any tiny rise in blood sugar." EXPECTED EFFECT |
| "I'll avoid ibuprofen and alcohol and report black stools." | "I'll take naproxen with it for my joint pain." |
| "I'll wear medical alert identification." | "Nobody needs to know I'm on this." |
The endocrine other half: NG-287 — Addison's vs Cushing's (too little vs too much cortisol — the disease version of everything on this page). Because steroids raise glucose: NG-290 — Diabetes, NG-292 — Diabetes II and NG-291 — DKA vs HHS.