[Excerpt] The "lost" mental health generation primarily comprises individuals who were children before the late 20th century, a period when awareness and understanding of ASD, ADHD, and bipolar disorder were significantly less than today and diagnostic criteria were not precise -- or they were non-existent (e.g., the term "minimal brain dysfunction" was commonly substituted for ADHD). During this time, these conditions were often misdiagnosed as behavioral issues or personality traits, leading to inappropriate treatment or no treatment at all during their formative years.