Living with people diagnosed with a mental disorder is known to increase the risk of developing high levels of so-called "caregiver burden" in informal caregivers. In-depth analysis of this phenomenon and specific assessment tools for caregivers of patients diagnosed with Eating Disorders (EDs) are lacking. In this study, we aimed to evaluate the psychometric properties of the Caregiver Burden Inventory in EDs and employ this adapted tool in this category of caregivers.