Can prednisone cause chills?

Prednisone Does Not Directly Cause Chills

Prednisone itself does not cause chills as a direct adverse effect. However, chills in a patient taking prednisone should raise immediate concern for infection or adrenal insufficiency, both of which are serious complications of corticosteroid therapy.

Key Clinical Considerations

Chills as a Warning Sign of Infection

The FDA drug label for prednisone does not list chills as an adverse reaction 1. Instead, prednisone suppresses the immune system and increases infection risk, which commonly presents with fever and chills 1. The corticosteroid masks typical inflammatory responses, making infections potentially more severe and harder to detect 1.

Critical points about infection risk:

• Infection rates increase with higher corticosteroid doses 1
• Infections can range from mild to severe and fatal 1
• Prednisone may mask some signs of infection while allowing it to progress 1
• If a patient on prednisone develops chills with fever, infection must be ruled out immediately before attributing symptoms to other causes

Chills as a Sign of Adrenal Crisis

Patients on long-term prednisone (>3-4 weeks at doses exceeding 4-6 mg daily) develop glucocorticoid-induced adrenal insufficiency 2. When these patients experience stress, illness, or rapid dose reduction, they can develop adrenal crisis, which presents with:

• Hemodynamic instability
• Vomiting or diarrhea
• Profound weakness and malaise 2

The 2024 European Society of Endocrinology/Endocrine Society guidelines explicitly recommend that patients with current or recent glucocorticoid use who present with hemodynamic instability, vomiting, or diarrhea should be treated for suspected adrenal crisis with parenteral glucocorticoids and fluid resuscitation 2.

Withdrawal Phenomenon

One case report describes fever occurring during the drug-free day of alternate-day prednisone therapy, representing a withdrawal syndrome 3. While this specifically described fever rather than chills, it illustrates that abrupt changes in corticosteroid levels can produce systemic symptoms.

Clinical Algorithm

When a patient on prednisone presents with chills:

1. First priority: Rule out infection

   • Obtain vital signs, complete blood count, cultures
   • Remember that prednisone may blunt fever response 4
   • Research shows prednisone doses of 28-35 mg typically suppress fever from lupus within 24 hours, but infection-related fever persists despite even high-dose steroids (35-300 mg/day) 4

2. Second priority: Assess for adrenal insufficiency

   • Evaluate for hemodynamic instability, severe weakness, gastrointestinal symptoms
   • Consider recent dose changes or increased physiologic stress
   • If suspected, treat immediately with stress-dose corticosteroids 2

3. Review medication history

   • Duration of prednisone therapy
   • Current dose and any recent changes
   • Timing of symptoms relative to dosing

Common Pitfalls

• Do not assume chills are a benign side effect of prednisone - they signal a potentially serious complication
• Do not continue high-dose steroids empirically if infection is suspected - this increases risk of severe sepsis and death 4
• Do not abruptly discontinue prednisone - this can precipitate adrenal crisis in patients on chronic therapy 1

The FDA adverse reaction profile for prednisone includes cardiovascular, dermatologic, endocrine, gastrointestinal, neuropsychiatric, and ophthalmic effects, but chills are notably absent 1. Therefore, chills warrant immediate clinical evaluation rather than being dismissed as an expected medication effect.