People with a liver condition who develop dark black tarry faeces, or dark urine, should also seek “urgent medical attention”, according to the BLT.
Other serious symptoms include vomiting blood, bruising easily, itching skin and swelling of the lower tummy area.
The Johns Hopkins Medicine site says you may experience severe tiredness, weakness, weight loss, yellowing of the skin or eyes or spider-like blood vessels on the skin.
As it often does not cause any symptoms, it is usually diagnosed when you have routine blood tests to check your liver.