Right-sided abdominal pain with fever narrows the diagnosis to two primary conditions based on location: appendicitis (right lower) and acute cholecystitis (right upper). Both are surgical emergencies requiring hospital admission, IV antibiotics, and surgery. The vertical location of pain on the right side is the key differentiator. Neither condition should be managed at home.
Quick Answers
The right side of the abdomen houses two of the most important acute surgical structures: the appendix (right lower) and the gallbladder (right upper). When fever accompanies pain in either location, it signals that infection has become established. The treatment path for each is clear - but both require hospital evaluation, not home management.
Location Determines the Likely Diagnosis
Right Lower + Fever = Appendicitis
- Pain progressive over 6–12 hours
- Started periumbilically, moved right lower
- Loss of appetite - nearly universal
- Low-grade fever initially (37.5–38.5°C)
- Nausea, 1–2 vomiting episodes
- Rebound tenderness at McBurney's point
- CT scan confirms - laparoscopic appendectomy
- Do not wait - perforation risk rises after 24 hours
Right Upper + Fever = Cholecystitis
- Constant pain (not colicky like biliary colic)
- Known or newly diagnosed gallstones usually
- Murphy's sign positive on examination
- Fever 38–39°C
- Nausea and vomiting
- Ultrasound confirms gallbladder inflammation
- IV antibiotics + cholecystectomy within 72 hours
- Add jaundice → cholangitis → EMERGENCY
Seek emergency care if fever + right pain progresses to:
- Jaundice (yellow eyes/skin) - cholangitis, bile duct infection - immediate ERCP
- Rigid or board-like abdomen - peritonitis from perforation
- Spreading pain from right to entire abdomen - perforated appendix or gallbladder
- Confusion, low blood pressure, rapid heart rate - septic shock
- Worsening despite 24+ hours of IV antibiotics - complications developing
Treatment by Location
Appendicitis (right lower)
- CT scan confirms diagnosis
- IV antibiotics started
- Laparoscopic appendectomy within hours of diagnosis
- 3 small incisions, 30–60 minutes, general anaesthesia
- Next-day discharge for non-perforated appendicitis
Acute cholecystitis (right upper)
- Hospital admission
- IV antibiotics (broad-spectrum)
- IV fluids, IV analgesia, nil by mouth
- Laparoscopic cholecystectomy within 72 hours
- 1–2 day hospital stay for uncomplicated cholecystectomy
Frequently Asked Questions
Desi Patient Questions
Location: Right LOWER = appendicitis. Right UPPER = cholecystitis. Banne urgent evaluation zaruri chhe. Blood tests + ultrasound/CT distinguish karshe. Do not guess - hospital javo immediately for both.
Think It Might Be Appendicitis? Don't Wait.
CT scan + same-day laparoscopic appendectomy if confirmed. Emergency evaluation available 24 hours at Sterling Hospital.
