Being the other child - A systematic review on the quality of life and mental health of siblings of children with rare diseases.

Background: Siblings of children with rare diseases play a crucial yet often overlooked role in the family dynamic and their sibling's illness experience. This systematic review aims to synthesize and evaluate existing research on the Quality of Life (QoL) and mental health outcomes of siblings in this unique context.

Methods: We performed a systematic literature search in six databases, including quantitative studies on siblings of children with rare diseases.