Familial social support refers to the emotional, informational, instrumental, and companionship-based assistance that individuals receive from family members ^[1][2]. It is a form of social support embedded in family relationships and may involve empathy, encouragement, advice, shared activities, practical assistance, and help with coping with stressful or challenging circumstances ^[1][3]. Familial social support can be provided by parents, partners, siblings, children, or other relatives, depending on the individual’s family structure and social context ^[2][4]. The concept includes both perceived support, referring to an individual’s belief that family members are available and willing to provide assistance, and received support, referring to support that is actually provided. The availability and perceived quality of familial social support may vary according to family relationships, individual needs, cultural norms, and life circumstances. It therefore represents a relational dimension of social support arising from family networks.