Quality of life among relatives of patients with amyotrophic lateral sclerosis: A prospective and longitudinal study.

Social relations, emotional well-being, and rapid decline in the patient's physical function influence the relatives' iQoL. Measuring both emotional well-being and iQoL, with a focus on the relatives' own descriptions of perceived iQoL and those factors contributing to their iQoL during the disease trajectory may improve the possibility of identifying and supporting those relatives with poor iQoL.