Fever of Unknown Origin –

When to Panic & When to Hold Back

Why This? FUO is one of the trickiest diagnoses in medicine.
Key Takeaways:✅ Stepwise approach to FUO – What to test and when✅ Common causes of FUO (TB, endocarditis, occult abscess)✅ When to start empirical antibiotics vs. wait it out
A patient has fever for 3 weeks, cultures are negative, and the labs don’t help. What now?

💡 Question for you: What’s the strangest FUO case you’ve encountered? Drop it in the comments! 👇