Hepatitis B is not an illness that can merely be shrugged off, and symptoms are highly unpleasant and can lead to serious consequences. Symptoms of this illness include a sudden fever, tiredness, loss of appetite, nausea, vomiting, stomach pain, dark urine, joint pain, and yellowing of the skin and eyes. Certain people may develop chronic, lifelong Hepatitis B, causing early death from liver disease and cancer.