Although the experience of siblings of paediatric patients hasreceived very little attention, the work that does exist indicatesthat there are significant problems and that the topic needsfurther exploration. As a contribution to furthering this areaof research, the present paper presents findings on siblingsexperience from a study examining the impact of the diagnosisand treatment for childhood Acute Lymphoblastic Leukaemia(ALL) from the perspective of all family members. In particular,the effect of relocation upon the sibling, emotions andrelationships between sibling and parent will be presented. Thefindings indicate that siblings are a vulnerable group who report⦥eling very left out' because of the enormous demands placeon their families during the intense and prolonged medical dramaassociated with treatment for ALL.