Study explores how family and friends impact caregiver health

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* INCLUSION CRITERIA: * Adult family members of the individuals affected by an inherited disease (e.g. Alzheimer s disease, inborn errors of metabolism and mitochondrial disease, lysosomal storage disorder, genetic neurodegenerative disorder, undiagnosed diseases, and inherited inflammatory conditions) OR * Informal caregivers of the affected individual OR * Caregivers family members OR * Formal caregivers who are identified as part of patients caregiving networks will be eligible for recruitment in the study OR * For the control group in Substudy 2, adult family members of normally developing children, informal caregivers, caregivers family members and formal caregivers who are identified as part of the child s caregiving network will be eligible for recruitment in the study. (For better matching across groups: in the Healthy Volunteer controls, the normally developing focus child must live in the parent/caregiver household on a full-time basis.) * Participants are eligible for biospecimen collection in Substudies 3 only if two parents/caregivers are present in the household, eligible, and willing to provide biospecimens. * Fluency in English EXCLUSION CRITERIA: * Those who are unable to complete the survey and interviews * Affected individuals/Patients with condition being studied * Individuals under the age of 18 * Those who have fever or signs of acute infection on the collection day, have been hospitalized in the past 3 months, and women who are currently pregnant or nursing will not be eligible for the biospecimen collection portion of Substudies 2 and 3 but will be eligible for the survey/interview portion of the substudies. * Control group individuals will be excluded if they serve as a caregiver for anyone in their family affected by any major medical condition. * Staff of NHGRI (National Human Genome Research Institute)