In-depth

Symptoms

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Nausea and vomiting

Sick to your stomach? Nausea and vomiting usually pass quickly but sometimes result from long-term or serious conditions.

Tests and diagnosis

Liver function tests

Find out how this battery of blood tests helps your doctor diagnose and monitor liver disease.

Aug. 29, 2012

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