Fatigue is a very frequently reported symptom in patients with inflammatory bowel disease (IBD), whether it is Crohn's disease (CD) or ulcerative colitis (UC). Sometimes the fatigue may be easily explained by other symptoms or tests which show that the disease is active. For example patients may be anaemic (have a low blood count) which can in itself lead to a feeling of being tired all the time. Treatment of the disease can make some of these patients feel less fatigued.