Appendicitis and Urinary Tract Infection: How These Conditions Are Related and How to Treat Them

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Appendicitis and Urinary Tract Infection: How These Conditions Are Related and How to Treat Them

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Appendicitis and Urinary Tract Infection share similar symptoms—abdominal pain, malaise, fever. See how the two conditions intersect and the available treatments.

Appendicitis and urinary tract infection (UTI) often present alike, with malaise, abdominal pain and fever.

Depending on where the appendix sits, its inflammation can trigger urinary symptoms if the organ lies close to the bladder.

In today’s article you’ll learn how these issues relate and how they can even affect sexual health.

Can appendicitis and urinary tract infection be related?

Yes. Confusing appendicitis with a urinary tract infection is quite common in the early stage because both share malaise, abdominal pain and fever.

The overlap also occurs because an inflamed appendix may increase urinary frequency and cause pain when urinating, classic UTI signs.

These urinary signs depend on appendix position; in some people it lies near the bladder and urethra.

Symptoms and why they confuse the diagnosis

Typical UTI symptoms include burning while urinating, frequent urge to urinate, feeling of incomplete emptying, lower-abdominal pain, fever and low-back pain. Severe cases may show blood in the urine.

In men, UTI may also cause testicular pain and perineal discomfort.

Key appendicitis symptoms:

  • Malaise
  • Abdominal pain and tenderness
  • Loss of appetite
  • Nausea
  • Vomiting
  • Diarrhea
  • Fever
  • Increased urinary frequency (when the appendix is close to the urethra and bladder)

Because of these overlaps, medical evaluation is essential for the right diagnosis.

White man wearing a white shirt and jeans, hands over lower abdomen, toilet in background

Can recurrent UTIs lead to erectile dysfunction?

Erectile dysfunction may relate to UTIs that reach the urethra and prostate.

Bacteria ascending the urinary tract can inflame the prostate (chronic prostatitis), affecting penile blood flow and nerve function.

Frequent UTIs can also cause anxiety and low self-esteem, which further impact sexual performance.

Treatment options

See how each condition is treated:

Appendicitis

Appendectomy is indicated to stop disease progression, particularly when complications are likely.

Ideally performed within 24 hours of diagnosis, under general anesthesia, and lasting up to one hour.

  • Laparoscopic: minimally invasive; three small incisions (≈ 1 cm) for camera and instruments.
  • Open (traditional): used when the appendix is dilated; a 5 cm incision in the lower right abdomen.

Antibiotics and analgesics complement surgery to control infection and pain.

Urinary Tract Infection

UTIs are treated with antibiotics (5–14 days). Pain may be eased with analgesics or anti-inflammatories.

Surgeons in operating room completing sutures, wearing blue gowns, gloves and masks

Why follow-up with a urologist matters

Regular appointments help detect urinary and sexual issues early, allowing individualized management.

Appendicitis and UTIs share symptoms that affect quality of life and sexual health. Staying informed helps you spot warning signs and seek timely care.

Keep exploring the Dr. Paulo Egydio blog for more insights on urinary health, male sexuality and well-being.

Learn more:

Paulo Egydio, M.D.

PhD in Urology from USP, CRM 67482-SP, RQE 19514, Author of Geometric Principles (known as “Egydio Technique”), as well as other articles and scientific books in the area. Guest professor to teach classes and live surgeries at conferences in Brazil and abroad.

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