This knowledge can be taken into account when treating patients with MS. Further research is needed using longitudinal designs and incorporating other factors known to influence anxiety, such as coping, negative affectivity and social support.
The comparison of two groups showed a significant increase trait anxiety (P < 0.001), fatigue (P = 0.009) and significant decrease in the executive function (P = 0.003), MMSE (P = 0.003), and working memory (P < 0.001) in addicted MS.