Emergency Medicine

**Acute Appendicitis: Causes, Risk Factors, and What to Know** Acute appendicitis occurs when the appendix becomes blocked, most commonly by: - **Hardened stool (appendicolith)** — the leading cause - **Swollen lymphoid tissue** following a recent infection - **Foreign bodies** (rare) This blockage triggers bacterial overgrowth, inflammation, swelling, and potentially rupture if untreated. **Key risk factors include:** - Age between 10 and 30 - Male sex - Low-fiber diet - Family history of appendicitis - Smoking - Recent gastrointestinal infection Symptoms, diagnosis, and treatment options vary, and urgent medical care is often required to prevent complications like rupture or peritonitis. **Not sure if your symptoms point to appendicitis?** Sharp abdominal pain—especially around the belly button or lower right side—paired with nausea, fever, or loss of appetite can escalate quickly. Because appendicitis can become a surgical emergency within hours, getting clarity early matters. Take a free, instant <a href="https://ubiehealth.com/diseases/acute-appendicitis">Acute Appendicitis symptom check</a> online to better understand what your body is telling you and confidently navigate your next steps. Reviewed for medical accuracy: 06/17/2026