Symptoms like dark urine and yellow eyes can be caused by a liver problem relates the Mayo Clinic. Another symptom of a liver not working properly can be light-colored stool. The yellow color of the skin and eyes is referred to as jaundice.
Jaundice is associated with a high level of bilirubin in the blood, explains the Merck Manuals. A liver disease like hepatitis can cause both jaundice and dark urine. Some other symptoms linked with hepatitis are diarrhea and nausea, reports the National Institutes of Health's MedlinePlus. In most cases, hepatitis is caused by a virus that causes the liver to swell. Other factors that can contribute to contracting hepatitis are either drinking excessive amounts of alcohol or drug use.