Living with Hypopituitarism: Sick Day Rules and Stress Dosing

Note: The following guidance applies specifically to patients who have confirmed or suspected ACTH deficiency (central adrenal insufficiency) and require daily glucocorticoid replacement. If your adrenal axis is intact, these rules do not apply to you.

Living with central adrenal insufficiency means your body cannot produce extra cortisol. In a healthy person, the body naturally pumps out extra cortisol during illness or injury to keep blood pressure and energy stable ^[1]. Because your pituitary cannot send this signal, you must manually provide this extra hormone yourself—a process called stress dosing ^[2].

The “Sick Day Rules” for Oral Meds

When you have a minor illness, like a cold with a fever or a mild infection, you must follow a personalized “Sick Day Plan” provided by your endocrinologist to prevent a life-threatening adrenal crisis ^[3].

• Fever or Infection: You will generally be instructed to increase (often double or triple) your usual oral dose of hydrocortisone until the illness improves ^[3][4]. The exact amount depends on your usual steroid, age, and illness severity. Always use your prescribed, individualized thresholds.
• Contact Your Team: If your fever or illness persists, contact your clinical team. They will guide you on how and when to taper back to your normal maintenance dose ^[2]. Never stop taking your regular glucocorticoids abruptly.

When the Injection Is Necessary

If you cannot absorb oral medication, swallowing pills is no longer an option. You must have an emergency injection kit containing hydrocortisone (commonly 100mg for adults, with varying doses for children) ^[4][2].

You (or a trained caregiver) must INJECT FIRST, then seek emergency medical help if you experience:

• Inability to Keep Pills Down: If you are vomiting and unable to retain your oral medication ^[1][5].
• Severe Diarrhea: If it is persistent enough that you likely aren’t absorbing your medication ^[3].
• Signs of Crisis: These include profound weakness, confusion, feeling like you might faint, or a sudden drop in blood pressure ^[6][7].

The injection is given into a large muscle, like the outer thigh (intramuscular) ^[4]. It is designed to act rapidly to keep you safe until you reach the hospital, where doctors can provide intravenous (IV) fluids and more steroids ^[5][8]. After injecting, you still require immediate emergency evaluation.

Medical Identification: Your Lifeline

In an emergency, you may be too confused or weak to explain your condition. Professional guidelines state that all patients with adrenal insufficiency must have:

1. Medical Alert Jewelry: A bracelet or necklace that clearly states “Adrenal Insufficiency” and “Steroid Dependent” ^[9][7].
2. Steroid Emergency Card: A card in your wallet or phone case that tells doctors exactly how much hydrocortisone you need in an emergency ^[2].

Preparing for Procedures and Surgery

Medical and dental procedures are forms of “planned stress.” Your body will need extra support during and after these events, but the amount of stress hormone needed varies widely depending on the procedure.

• Individualized Planning: A deep dental cleaning, a colonoscopy, and major surgery all require different stress doses. There is no single protocol that fits all procedures.
• Coordination is Key: Always inform every doctor, surgeon, and dentist you see that you have hypopituitarism and are steroid-dependent. You must obtain a written, procedure-specific perioperative plan coordinated between your endocrinologist, anesthesiologist, and surgical team ^[10][8].