Heiner N. Lachenmeier, MD, is a Psychiatrist and Psychotherapist, working for more than 20 years with the main focus on adult ADHD in his private practice close to Zurich. He did research on functional understanding of ADHD and developed practice-oriented forms of treatment, international publications, teaching and leadership coaching. He is the founder and past chair of the FMPP, the umbrella organization of the two Swiss Psychiatric Associations (adult and children/adolescents), served in the parliament of the Swiss Medical Association FMH as well as in its Presidents Conference. In earlier years he built up the Swiss Training Institute for psychodynamic short-term therapy (GIK), was its first director of training and still remains a member of its faculty. In addition he advises the Institute for Integrative Gestalttherapy Würzburg (D) IGW and its Swiss subsidiary as a medical training manager. He is a member of the Swiss Association for ADHD, the ADD-Forum Berlin andthe World Federation of ADHD. Dr. Lachenmeier is a honorary member of the Argovian Psychiatric and Psychotherapeutic Association and of the Swiss self-help organization adhs20plus.