It fits to psicopedagogo, for its importance in the school, the clinic, and the family, as well as in the disgnostic evaluation and the treatment of dislxicos pupils contributing in the recovery and development of the necessary abilities to its development in the aspects: cognitivos, emotional, social, aiming at the success in the diverse contexts where it acts, convoking for such, areas as the fonoaudiloga, pedagogia, neurology, psychiatry, amongst others. Some research points the thesis of the Fonolgico Deficit as probable cause of the dislexia. In accordance with this hypothesis, the dislexia is caused by a deficit in the system of fonolgico processing motivated by a disrupo in the cerebral neurological system, to the level of the fonolgico processing. For Galaburda, famous, recognized author for all the authors when he speaks of dislexia and TDAH, one of whom more has works in alterations anatomical in the dislexia, it published a series of works in the decades of 1970 and 1980, and that repetidamente they are cited by other authors who, vain, it would have proven that the problem of the dislexia would be the asymmetry of neurons in the secular and ectopital plan neuronais in cortex, thalamus and cerebellum. The 30 years had been studied five people with ages varying of 12 and presumed that they were dislxicas! How was made the dislexia diagnosis? I still did not find scientific information on this, what me it seems to be this question, basic in scientific research. Such results come being throughout the years, convergence point and of divergence between some studious Siegel (2006), it says: ' ' One of the great problems is that no specific blood test or result of images of the brain does not exist that can supply a diagnosis. Basically, the problem is that the reading is measured in one? continuum? , and it does not have note of cut in a reading test that distinguishes dislxicos individuals clearly not dislxicos. .