**3. Quality of life**

Depression prevalence in MS patients is correlated with a decrease in the quality of life regardless of the neurological or related to function deficits in correlation

*Neuropsychiatric Symptoms in Demyelination Disorders DOI: http://dx.doi.org/10.5772/intechopen.95618*

with MS [9]. In a study by Carta et al. [10] was concluded that patients with MS and a subsequent chronic affection mood disorder present significantly decreased results on the SF-12 (an assessing instrument of quality of life) in comparison with MS patients wich do not present a history of mood impairments. In a study by Wang et al. [11] in which was assessed the MSQOL-54 score in multiple sclerosis patients, the participants that presented depression in antecedents, regardless of the state of their mood in the examination, provided significantly decreased MSQOL-54 averages in relation to energy, mental health, cognitive capacity and general quality of life.
