Hepatitis C often doesn't have any noticeable symptoms until the liver has been significantly damaged. This means many people have the infection without realising it. When symptoms do occur, they can be mistaken for another condition. Symptoms can include: flu-like symptoms, such as muscle aches and a high temperature (fever) feeling tired all the time loss of appetite abdominal pain feeling and being sick The only way to know for certain if these symptoms are caused by hepatitis C is to get tested