Appendicitis and Fever: Understanding the Symptoms

Is Fever Always Present in Appendicitis?

No. Fever is a common but not universal sign of appendicitis. Its absence does not rule out the diagnosis.

Typical Presentation

• Early: Periumbilical pain → migrates to RLQ (McBurney's point).
• Associated: Anorexia, nausea/vomiting, low-grade fever (37.5–38.5°C / 99.5–101.3°F).
• Signs: RLQ tenderness, rebound tenderness, guarding, Rovsing's sign, psoas sign.

When Fever May Be Absent

• Early appendicitis (before inflammation spreads)
• Elderly or immunocompromised patients (blunted response)
• Retrocecal appendix (less peritoneal irritation)
• Pelvic appendix (may present with urinary/rectal symptoms)

Diagnostic Approach

Clinical scoring (Alvarado, Appendicitis Inflammatory Response) + labs (WBC, CRP) + imaging (US, CT). Fever is just one component.