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​Symptoms and Signs – Differential Diagnosis of Fever of Undetermined Origin (FUO)
• Infection (16%)
• Abscess: abdominal, pelvic
• Tuberculosis
• HIV infection
• Nosocomial (febrile for 3 days in hospital): urinary tract
infection, pneumonia, line-related bacteremia, Clostridium
difficile diarrhea, sinusitis
• Bacterial endocarditis (especially caused by difficult-to-isolate
organisms)
• Biliary tract infection
• Osteomyelitis, vertebral and mandibular
• Less common infections: Q fever, leptospirosis, psittacosis,
tularemia, secondary syphilis, gonococcemia, chronic
meningococcemia, Whipple’s disease, yersiniosis, fungal
infections

• Malignant neoplasia (7%)
• Lymphoma and leukemia, renal cell carcinoma, hepatocellular
carcinomas, other tumors metastatic to liver
• Noninfectious inflammatory disease (22%)
• Juvenile rheumatoid arthritis (younger patients)
• Temporal arteritis (elderly patients)
• Other vasculitis: polyarteritis nodosa, Takayasu’s arteritis,
Wegener’s granulomatosis, mixed cryoglobulinemia, adult
Still’s disease

• Other (4%)
• Drug-induced fever
• Inflammatory bowel disease
• Sarcoidosis
• Granulomatous hepatitis
• Deep venous thrombosis
• Alcoholic hepatitis
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Kembara Xtra 

Facts about medicine and its subtopic such as anatomy, physiology, biochemistry, pharmacology, medicine, pediatrics, psychiatry, obstetrics and gynecology and surgery.