Attention Deficit Hyperactivity Disorder

All eligible patients over 15 years and 3 months (age limit between child psychiatry and adult psychiatry), presenting both a diagnosis of ADHD and a diagnosis of at least one addictive disorder (SUD, AUD (Alcohol Use Disorder) and/ or behavioral addiction), starting care in one of the three participating centers, and meeting the indication for treatment with MPH according to European recommendations (J. J. S. Kooij et al., 2019)