#Eldestdaughtersyndrome

Therapists have identified a pervasive challenge particularly troubling for eldest daughters: an overwhelming sense of over-responsibility, which significantly affects their happiness and well-being. Drawing on both recent research and extensive professional experience, mental health experts now describe “eldest daughter syndrome”—a set of expectations and pressures uniquely experienced by firstborn girls—as a major factor in their long-term mental health outcomes. The concept strikes a chord with many, resonating powerfully within Thai families, where cultural traditions often reinforce the burdens shouldered by eldest children.

Therapists warn of a quiet but widespread challenge for firstborn girls: an overwhelming sense of over-responsibility that erodes happiness and well-being. Known in some circles as “eldest daughter syndrome,” this collection of expectations uniquely affects firstborns and shapes long-term mental health. The idea resonates in Thai families, where traditions often place heavy duties on the eldest child.

In Thai society, family structure and filial duty are deeply valued. Eldest daughters often serve as the emotional backbone of the household. They are expected to care for younger siblings, coordinate family activities, and handle numerous unseen tasks that keep daily life running smoothly. When these roles start early, they can foster perfectionism, self-criticism, and burnout over time.