International expert on attention deficit hyperactivity disorder (ADHD) and suicidal behavior (SB). He is well-known for his disruptive ideas, including the therapeutic use of chess in patients with ADHD or the “addictive hypothesis” of SB. He graduated from the Basque Country in 1997, trained as a Psychiatrist at Ramon y Cajal Hospital (Madrid, Spain), and specialized as Child & Adolescent Psychiatrist at the Institute of Psychiatry (London, UK). He has a post-doc (6 months) stay at a specialized unit on SB in Montpellier under the supervision of the current president of the European Psychiatric Association (EPA), Philippe Courtet. In 2012 he joined the Puerta de Hierro University Hospital in Majadahonda (Madrid), where he leads a research team. He is the author of four books, more than 50 chapters of books, and 103 PUBMED-indexed articles in top journals of the field, such as World Psychiatry, Molecular Psychiatry, and Psychotherapy & Psychosomatics. He has received several national and international competitive funding and prizes, including a prize in two categories from the European Psychiatric Association and the Spanish Society of Biological Psychiatry in 2013. He is a recurrent evaluator for several National (i.e., ISCIII, MINECO, Alicia Koplowitz Foundation and Fundación Pública Andaluza Progreso y Salud) and International agencies, including the Polish National Science Centre, the French Agence Nationale de la Reserche, and the European Commission.