Ecstasy: an important cause of acute liver failure

A twenty year old female was referred to hospital by her GP, after he received the results of blood tests taken earlier in the day. She had presented to him complaining of malaise, nausea and anorexia over a 3 day period. On the day of referral she had also become jaundiced with dark urine, but normal stool colour. There was no abdominal pain. She had no significant past medical history with no history of jaundice, liver disease or autoimmune conditions, and no apparent risk factors for blood-borne hepatitis infection. There was no relevant family history. She was taking no prescribed medication, had not taken any over the counter medication or herbal remedies. She denied excessive alcohol use or use of intravenous drugs in the past, although she was not specifically questioned on the use of other recreational drugs. She was a single mother and admitted to being under considerable stress recently. On examination she appeared well, apart from marked jaundice. There were no signs of hepatic encephalopathy or chronic liver disease. Abdominal examination revealed mild left upper quadrant tenderness, but no significant hepatomegaly. Liver function tests (LFTs) taken by her GP are shown in Table 1, revealing marked elevation of the Alanine Transaminase (ALT) (Table 1), with a relatively preserved albumin. Unfortunately her International Normalised Ratio (INR) had not been measured. An Ultrasound of the abdomen demonstrated a normal size liver with normal contour and texture with no other abnormality.