It can be noted that in the literature published so far there is a lack of verification in large samples of the prevalence of CCSVI in MS compared with that observed in healthy subjects and in those with other diseases of the nervous system. The recent and authoritative contributions from the scientific community involved with MS stressing the need for closely controlled and suitably designed clinical studies for investigating the hypotheses suggested with regard to CCSVI (with the necessary thoroughness and with the promptness demanded by the public opinion) are therefore definitely justified.