Free full flowchart · Emergency Medicine

Fever: Step-by-Step Approach (Flowchart)

This is the complete fever flowchart from the USMLE Adviser e-book, shared free. It turns the presentation into a short series of yes/no questions, the way Step 2 CK and Step 3 vignettes are reasoned through. The same logic is written out as text below the image.

Fever flowchart: step-by-step diagnostic approach for USMLE Step 2 CK and Step 3

The flowchart, step by step

  • Unstable / organ dysfunction?
    • Yes → Headache / neck stiffness?
      • Yes → Meningitis
      • No → Sepsis
    • No → Localizing symptoms?
      • Yes → Cough / dyspnea?
        • Yes → Pneumonia
        • No → Urinary / flank pain?
          • Yes → Pyelonephritis
          • No → Abdominal / skin findings?
            • Yes → Intra-abdominal infection
            • No → Skin / soft-tissue infection
      • No → New medication?
        • Yes → Drug fever
        • No → Joint pain / rash?
          • Yes → Autoimmune / inflammatory disease
          • No → Malignancy

Diagnoses covered

Meningitis, Sepsis, Pneumonia, Pyelonephritis, Intra-abdominal infection, Skin / soft-tissue infection, Drug fever, Autoimmune / inflammatory disease, Malignancy.

Practice this flowchart as a puzzle. Fever is MedFlowdle No. 4, a free daily puzzle where you fill in the missing boxes. Play it in MedFlowdle →

FAQs

What is the first question in the fever flowchart?

The flowchart starts with Unstable / organ dysfunction? Each answer leads to the next yes/no decision until you reach a likely diagnosis.

Which diagnoses does this flowchart cover?

Meningitis, Sepsis, Pneumonia, Pyelonephritis, Intra-abdominal infection, Skin / soft-tissue infection, Drug fever, Autoimmune / inflammatory disease, Malignancy.

Is this the full flowchart from the e-book?

Yes. This is page 8 of the USMLE Adviser e-book, shared free. The full e-book has 232 flowcharts.

Related flowcharts

Want all 232 flowcharts?

The USMLE Adviser e-book has 232 one-page clinical flowcharts across 19 specialties for Step 2 CK, Step 3 and the Match. Instant digital download.

From Clinical Algorithms: Volumes 1 & 2 by Dr. Adnan Memon, MD (page 8). Reviewed by the USMLE Adviser Team. For exam preparation only, not medical advice.