No verified creator or formal establishment record has been identified for Be a Kid Again Day. It circulates widely as a listed 'National Day' with social and institutional pickup, but no primary source documents who started it or when.
From sickness to suspicion
The illness label proved sticky. Across the 20th century, psychiatry kept nostalgia in the problem column, recasting it at various points as an "immigrant psychosis," a "compulsive disorder," and a cousin of grief and depression, as documented in The Psychologist. The warm glow most people felt was still being read as a symptom.



