What are the signs and symptoms of hepatitis?

Signs and Symptoms of Hepatitis

Most hepatitis infections (70-80%) are asymptomatic, but when symptoms occur, they typically include flu-like symptoms, fatigue, nausea, vomiting, right upper quadrant pain, jaundice, dark urine, and clay-colored stools.

Acute Hepatitis Presentation

Common Symptoms (When Present)

The clinical presentation varies dramatically by age and type of hepatitis, but symptomatic acute hepatitis typically manifests with 1:

• Prodromal phase (1-7 days before jaundice):

  • Flu-like symptoms
  • Fatigue and malaise
  • Anorexia
  • Nausea and vomiting
  • Right upper quadrant abdominal pain
  • Muscle and joint pain
  • Low-grade fever
  • Pruritus

• Icteric phase:

  • Dark urine (bilirubinuria) - often the first symptom prompting medical attention 2
  • Jaundice (scleral icterus, skin yellowing)
  • Clay-colored/pale stools
  • Hepatomegaly on examination

Age-Dependent Symptom Expression

Critical caveat: Age dramatically affects symptom presentation 2:

• **Children <6 years:** >90% asymptomatic with hepatitis A
• Older children and adults: >66% develop jaundice
• This explains why hepatitis outbreaks in childcare settings are often detected only when adult contacts become symptomatic

Chronic Hepatitis Presentation

Most chronic hepatitis patients (60-80%) remain asymptomatic 1. When symptoms occur, they include:

• Persistent fatigue
• Abdominal discomfort
• Nausea
• Muscle pain
• Arthritis or arthralgias
• Weight loss
• Fluctuating jaundice

Advanced Disease Signs

When cirrhosis develops (present in ~30% at diagnosis) 3, 4:

• Palmar erythema
• Spider nevi
• Splenomegaly
• Ascites
• Signs of portal hypertension
• Variceal bleeding

Type-Specific Presentations

Hepatitis A

• Incubation: 15-50 days (average 28 days) 2
• Symptoms last 3-4 weeks typically
• Jaundice in ~20% of acute cases 1
• Fulminant hepatitis rare (<1%)

Hepatitis B

• Can present as acute hepatitis or remain asymptomatic
• Chronic infection often discovered incidentally through elevated transaminases 5

Hepatitis C

• 70-80% of acute infections asymptomatic 1
• When symptomatic: flu-like symptoms, fatigue, vomiting, nausea, right upper quadrant pain, muscle pain, pruritus within 2-12 weeks
• Jaundice in ~20% of acute cases with bilirubin 3-8 mg/dL 1

Hepatitis E

• Clinically silent in vast majority (>95%) 6
• When symptomatic: elevated liver enzymes, jaundice, fatigue, itching, nausea
• Predominantly affects older males (median age 63, M:F ratio 3:1) 6

Autoimmune Hepatitis

Highly variable presentation 3, 4:

• 25% completely asymptomatic at diagnosis (including some with cirrhosis)
• 25% present as acute hepatitis
• Common symptoms: fatigue, general ill health, anorexia, weight loss, nausea
• Joint pains in 30-60% (flitting arthralgias, rarely with swelling)
• Amenorrhea common in women
• Rare: maculopapular rash, unexplained fever

Important pitfall: Acute autoimmune hepatitis may initially lack typical autoantibodies (ANA/SMA) and have normal IgG levels, with antibodies developing later 4. Don't exclude the diagnosis based on initial negative serology if clinical suspicion is high.

Laboratory Findings

When symptoms occur, expect:

• Elevated ALT/AST (can reach several thousand in acute presentations)
• Elevated bilirubin (typically 3-8 mg/dL in acute hepatitis C) 1
• Hyperglobulinemia (particularly in autoimmune hepatitis) 3
• Elevated alkaline phosphatase in cholestatic variants

Severe/Fulminant Presentations

Acute liver failure is rare (<1% of acute hepatitis) but critical to recognize 1:

• Progressive jaundice
• Coagulopathy
• Hepatic encephalopathy
• Deteriorating liver function

Risk factors for severe disease:

• Age >50 years 2
• Chronic liver disease (including chronic HBV or HCV) 2
• Pregnancy (particularly hepatitis E in endemic areas)
• Immunosuppression

Extrahepatic Manifestations

Hepatitis can present with extrahepatic symptoms 7:

• Mixed cryoglobulinemia vasculitis
• Glomerulopathies
• Non-rheumatoid arthritis
• Serum sickness-like syndrome
• Panarteritis nodosa

These manifestations are considerably less frequent than in hepatitis C but influence morbidity and quality of life.

Key Clinical Pearls

1. Asymptomatic disease is the norm - most hepatitis infections don't cause symptoms, particularly in young children and chronic infections
2. Dark urine precedes jaundice - often the first symptom prompting medical evaluation 2
3. Age matters - younger patients are more likely to be asymptomatic
4. Repeat testing may be needed - initial antibody tests can be negative early in infection 8
5. Don't wait for "chronicity" - acute presentations of autoimmune hepatitis require prompt treatment, not months of observation 4