Haematological cancer is often associated with fatigue due to both anemia and constitutional symptoms. Myeloablative chemotherapeutic regimens and stem cell transplantations are unique for haematological cancer treatment and these very potent regimens may result in CRF even after several years. CRF among haematological cancer patients is associated with reduced adherence to physicians recommendations [11] and permanent withdrawal from labor market. Patients express that their single most prevalent and severe problem is "dealing with feeling tired", exceeding the proportion who expresses problems "in dealing with not feeling sure that the cancer has gone" or "being told they had cancer".