At the beginning of the twentieth century, just one mental disorder was recognized by the Canadian government: attention deficit hyperactivity disorder (ADHD).

Question

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At the beginning of the twentieth century, the understanding and classification of mental disorders were not as developed as today, and ADHD was not specifically recognized by governments, including Canada's, as the only mental disorder. The concept and diagnosis of mental health conditions have evolved significantly over time.

At the Beginning of the Twentieth Century, Just One Mental