Alleviation of suffering is considered to be one of the important goals of medical interventions. Understanding of what constitutes suffering in children admitted to a pediatric intensive care unit (PICU) is lacking. This study aims to assess perceptions by parents, doctors, and nurses of suffering in critically ill children. We interviewed 124 participants (parents, physicians, and PICU nurses) caring for 29 admitted children in a 20-bed level-III PICU and performed a qualitative analysis. We found that most participants made a distinction between physical and existential suffering. Parents considered the child's suffering caused by or associated with visible signs as discomfort. Nurses linked suffering to the child's state of comfort. Phy...