A 32-year-old man from Delhi presents with jaundice and dark urine for 2 weeks. Liver function tests show ALT 1200 IU/L, AST 980 IU/L, and total bilirubin 8.2 mg/dL. Hepatitis B serology shows: HBsAg positive, anti-HBc IgM positive, anti-HBc IgG negative, HBeAg positive, anti-HBe negative. What is the most appropriate next step in management?

Explanation

## Clinical Context: Acute Hepatitis B Infection The serological profile is diagnostic of **acute hepatitis B infection**: - **HBsAg positive**: Indicates active infection (appears first) - **Anti-HBc IgM positive**: Hallmark of acute infection (appears early, disappears within 6 months) - **Anti-HBc IgG negative**: Not yet developed (appears later in convalescence) - **HBeAg positive**: Indicates high viral replication and infectivity **Key Point:** Anti-HBc IgM is the single most reliable marker of acute HBV infection and distinguishes it from chronic infection or past exposure. ## Management Strategy for Acute Hepatitis B ### Rationale for Supportive Care 1. **Spontaneous clearance is the rule**: 90–95% of immunocompetent adults with acute HBV infection will clear the virus spontaneously within 6 months. 2. **Antiviral therapy is NOT indicated** in uncomplicated acute hepatitis B because: - Most patients achieve complete virological and serological clearance without drugs - Antivirals are reserved for fulminant hepatic failure or evidence of decompensation 3. **Monitoring is essential**: Serial HBsAg, anti-HBs, and liver function tests at 4–6 weeks and 3 months help document clearance. ### What Happens on Follow-up (Expected Trajectory) | Marker | Acute Phase | Convalescence (4–6 weeks) | Recovery (3–6 months) | |--------|-------------|---------------------------|----------------------| | HBsAg | Positive | Declining | Negative | | Anti-HBc IgM | Positive | Declining | Negative | | Anti-HBc IgG | Negative | Appearing | Positive | | Anti-HBs | Negative | Appearing | Positive | | HBeAg | Positive | Declining | Negative | **Clinical Pearl:** The appearance of anti-HBs (antibody to HBsAg) signals recovery and is the last marker to appear. Once anti-HBs is positive and HBsAg is negative, the patient is immune and non-infectious. ## Why Supportive Care Is Correct **High-Yield:** In acute HBV without fulminant failure, the management is: 1. Bed rest and nutritional support 2. Avoid hepatotoxic drugs and alcohol 3. Monitor for signs of hepatic encephalopathy, coagulopathy, or hypoglycemia 4. Repeat serology at 4–6 weeks to confirm clearance trajectory 5. Counsel on transmission prevention (sexual partners, household contacts) **Mnemonic: SCARE** — **S**upportive care, **C**ouncelling, **A**void hepatotoxins, **R**epeat serology, **E**ncephalopathy monitoring.