I can clarify that ADHD stands for Attention Deficit Hyperactivity Disorder, which is a well-established neurodevelopmental disorder. ADHD is characterized by symptoms such as inattention, hyperactivity, and impulsivity. It is a recognized medical condition and is diagnosed based on specific criteria outlined in the Diagnostic and Statistical Manual of Mental Disorders (DSM) or the International Classification of Diseases (ICD).
If there have been any changes or developments in the field of mental health since my last update, I recommend consulting a reliable and up-to-date source or a medical professional to get the latest information.