Avoid Dexamethasone for PAI Treatment Due to Cushingoid Side Effects
STEP 1 — Gather Information
Confirm diagnosis of primary adrenal insufficiency (PAI) and assess need for glucocorticoid replacement therapy.
STEP 2 — Rule In / Rule Out
Is dexamethasone being considered for glucocorticoid replacement in PAI? If yes, proceed to avoid; if no, continue with standard glucocorticoid selection.
STEP 3 — Classify or Stratify
Classify glucocorticoid options into preferred (hydrocortisone, cortisone acetate, prednisolone) and non-preferred (dexamethasone) for PAI based on Cushingoid risk and titration difficulty.
STEP 4 — Decide
Select a preferred glucocorticoid (hydrocortisone 15–25 mg/day or cortisone acetate 20–35 mg/day in divided doses) and avoid dexamethasone for PAI treatment.
Clinical Guardrails / Mimics / Pitfalls
Do not use dexamethasone for PAI due to its long half-life and lack of mineralocorticoid activity, which complicates dose titration and increases Cushingoid risk; avoid in pediatric patients; monitor for weight gain, hyperglycemia, hypertension if inadvertently used; do not rely on dexamethasone for emergency dosing.
Concrete Clinical Example
A 50-year-old woman with confirmed PAI is being evaluated for glucocorticoid replacement; the clinician considers dexamethasone for once-daily convenience but chooses hydrocortisone 20 mg daily in two divided doses after reviewing guideline 3.4 to prevent Cushingoid complications.
Source: Diagnosis and Treatment of Primary Adrenal Insufficiency: An Endocrine Society Clinical Practice Guideline, Endocrine Society, 2016, DOI:10.1210/jc.2015-1710