This article aims to attract the attention of specialists from medical and health sciences on cardiovascular disorders that are occurring before schizophrenia in people with highly genetic risk to develop schizophrenia. We are interested in the schizophrenia changes that affect the nervous system proper functioning, more specific about the cardiovascular system symptoms that are triggered before the onset of schizophrenia. The autonomous nervous system behavior, represented by the cardiovascular system signal correlations was investigated using a recently developed method, the NSTPDC method. Our main goal was to gather data not only on the existence of some specific changes that occur before schizophrenia but also on the extent and future effects of the cardiovascular signal correlations. At present, we do not have access to studies that investigate the onset of schizophrenia symptoms and we hope to bring valuable contributions in this area of interest.