Abstract
BackgroundSexual dysfunction is common but underestimated clinical symptom in MS patients. A growing body of evidence has been suggested the link between brain lesions and sexual dysfunction (SD) in patients with multiple sclerosis (MS). However, the clinical research investigating this relationship have shown inconsistent results. Here, we aimed to systematically review the magnetic resonance imaging (MRI) studies evaluating the association between the brain lesions and SD in MS patients. MethodsThis study was provided according to the recommendations of the preferred reporting items for systematic reviews and meta-analyses statement. A comprehensive systematic search of online databases was performed to find eligible studies up to December 2020. The quality of studies was methodologically assessed using Newcastle-Ottawa Scale score. ResultsWe identified eight articles regarding MS brain lesions and SD through the search strategy. Seven studies showed significant associations between SD and brain lesions. Three studies investigated the brain stem, two studies the insular and occipital region, one study the frontal lobe, prefrontal cortex, and temporal lobe and one study the parietal area. ConclusionThe results of this systematic review showed that lesions in different brain areas are correlated with SD in MS patients. Plaques in the occipital and hippocampus areas, as well as left insula appear to be related to dysfunction of sexual arousability or lubrication/erection in MS patients. Orgasmic dysfunction in MS patients may be associated with brain lesions in pons, left temporal periventricular, and right occipital areas.
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