A 45 year old woman presents with jaundice and pruritus for 2 weeks. She is otherwise asymptomatic.
She had a similar episode 1 year ago, which lasted for a few weeks and resolved spontaneously. She did not seek medical advice, and was symptom free afterwards.
She is not on any medications, only drinks socially, and denies promiscuity or drug abuse.
A full blood count is within normal parameters. An ultrasound scan of the abdomen reveals mild hepatomegaly only, with no evidence of gallstones.