The cause of dyslexia, a communication problem that affects the decoding and / or coding language signs in the areas of reading, writing or speech to be found in congenital and not on factors socio-emotional and family, which are, however, consequences of pathologies dyslexic and never its proximate cause. It is a congenital causation, with an organic base character present at birth brain, which explains dyslexia. This is the thesis that exposes J.Ll. Camino empirical analysis in this fruit of long experience in teaching and research. Dyslexia Fact or myth? is the result of profound reflection carried out from a field study conducted with 200 children with dyslexia. We are facing an empirical analysis of alternating reflective and the practical with the theoretical aspects, which provides a systematic dyslexia in all its manifestations and that in turn serves at diagnosis (delving into what is and is not dyslexia) and treatment. The pages of this book also impact on prevention and rehabilitation, required no correction since the causes of dyslexia school maladjustment can affect self-esteem and family life of the affected child. Teachers, parents children seem to dyslexia, educators, psychologists, educational psychologists.