patients with gilberts synd during the episode of jaundice manifest the following syptoms: abdominal pain, fatigue, loss of apetite, dizziness, feeling sick, irritable bowel disease which include cramps,bloody stools,diarrhea ir constipation.. also patients during the episode tend to have difficulty concentrating and thinking (brain fog) and have general sense of being unwell.. these symptoms mean that the blood bilirubin level is high and that you are experiencing an episode of jaundice.. you should know that the following may trigger these episodes: going without food for long time as fasting being ill with infection being stress physical exertion being dehydrated..