Safety of COVID-19 Vaccines: Spotlight on Neurological Complications.

The COVID-19 pandemic has led to unprecedented demand on the global healthcare system. Remarkably, at the end of 2021, COVID-19 vaccines received approvals for human use in several countries worldwide. Since then, a solid base for response in the fight against the virus has been placed. COVID-19 vaccines have been shown to be safe and effective drugs. Nevertheless, all kinds of vaccines may be associated with the possible appearance of neurological complications, and COVID-19 vaccines are not free from neurological side effects. Neurological complications of COVID-19 vaccination are usually mild, short-duration, and self-limiting. However, severe and unexpected post-vaccination complications are rare but possible events. They include the Guillain-Barré syndrome, facial palsy, other neuropathies, encephalitis, meningitis, myelitis, autoimmune disorders, and cerebrovascular events. The fear of severe or fatal neurological complications fed the "vaccine hesitancy" phenomenon, posing a vital communication challenge between the scientific community and public opinion. This review aims to collect and discuss the frequency, management, and outcome of reported neurological complications of COVID-19 vaccines after eighteen months of the World Health Organization's approval of COVID-19 vaccination, providing an overview of safety and concerns related to the most potent weapon against the SARS-CoV-2.

Twenty years after Spinnler and Tognoni: new instruments in the Italian neuropsychologist's toolbox.

The aim of this article is to review neuropsychological normative studies which - after Spinnler and Tognoni's monograph of 1987 - were done on healthy Italian adult subjects, and which either wholly or partially used the Equivalent Scores (ES) methodology proposed by Capitani et al. The independent norms settled for the same tests have been compared in order to point out their agreement, measured by Cohen's Kappa, which in most cases resulted either excellent or good (>0.7). Available tests have been classified and arranged to facilitate the most suitable choice for different clinical purposes. Moreover, a simple software program has been set up which adjusts and transforms raw scores into ES. As well as saving time and avoiding errors, this simple aid is likely to improve the quality and clarity of the communication of neuropsychological results.