The first edition of the 'small ADHD consultation', published in 2014, was originally created to provide my patients with a quick overview of the broad field of ADHD symptoms in adults as summarised as possible. It was important to me to integrate accompanying disorders and therapeutic options such as medication and coaching strategies. It is not uncommon for the underlying ADHD symptoms to be masked by disorders that develop later (such as obsessive thinking, anxiety, panic attacks and addictions). Only abnormalities in childhood, such as dreaminess or motor restlessness with impulsiveness, allow conclusions to be drawn. Patients and friends were kind enough to embellish this book with their contributions, sketches, pictures and poems. The significantly expanded 3rd edition of the 'Little ADHD Consultation' is due to the increased needs and demands of my patients and the new findings concerning ADHD. New topics such as neurofeedback, medication overview, neurobiological aspects and autistic accompanying phenomena as well as legal aspects and cannabis medication have been included. I wish you many A-HA experiences with this expansion.