How long before hepatitis B symptoms appear?

The time between exposure and symptoms varies from person to person. Early hepatitis B may cause tiredness, reduced appetite, nausea, low-grade fever, or discomfort in the upper abdomen; later, some people notice yellowing, dark urine, or pale stools. Others remain well throughout the early infection. The absence of symptoms does not rule out infection, and symptoms cannot identify the date of exposure. Testing is needed for a dependable answer.

Tell a clinician when the possible exposure occurred and what happened, such as sexual contact, a needlestick, shared injecting equipment, or contact with blood. They can choose appropriate tests and explain whether repeat testing is needed. Do not donate blood or share razors and toothbrushes while the situation is being assessed. Ask about hepatitis B vaccination if you are not known to be protected.

Seek prompt advice after a possible recent exposure because prevention may be time-sensitive. Arrange urgent care for confusion, severe vomiting, yellow skin or eyes, unusual bleeding, or marked abdominal swelling. Contact a clinician for persistent dark urine, worsening fatigue, or ongoing abdominal pain, even if symptoms began long after the suspected exposure.

Ask which hepatitis B tests are suitable now, when they should be repeated, and whether a liver function test is needed. Ask how to protect close contacts during testing, whether vaccination is appropriate, and which changes in symptoms should prompt urgent care.