Sexual dysfunction (SD) is common in the general population, up to 50% in women and with no clearly defined prevalence in men but up to 30% in erectile dysfunction. Sexual dysfunctions (SD) are common after a traumatic brain injury (TBI) but remain underrated in clinical practice, yet it is a crucial aspect of the person with consequences for the relationship with the other, psychological wellbeing and quality of life.To determine, through a systematic literature review, the epidemiology, assessment tools and treatment of SD in the TBI population.(keywords, languages): Medline, COCHRANE and OVID databases were used with specific keywords (MeSH), combined with Boolean operators: "sexual dysfunction", "sexuality", "erectile dysfunction" and "traumatic brain injury".Only studies published in French or English, and with full-text available, have been included. Articles have been independently reviewed and extracted.Of the 199 articles reviewed after exclusion of duplicates, 86 articles were reviewed in their full text. A total of 40 studies were included in the final analysis. After TBI, 6% to 83% of patients report SD: decreased frequency of sexual intercourse (47-62%), desire and/or arousal (24-86%), erectile dysfunction (24,2-57%), difficulties with orgasm (29-40%), inappropriate sexual behaviour (8,9%). There is no consensus method for evaluating SD in this population, with 16 tools identified. Among them, only two questionnaires were validated in this population, the Brain Injury Questionnary of Sexuality - not validated in French - and the Overt Behavior Scale, the latter being intended for the evaluation of sexual behaviour disorders. Several factors are significantly and positively associated with SD: age (P≤0.01), severity of TBI (P≤0.002), depression (P<0.001), anxiety (P<0.001), and fatigue (P=0.042). Others are negatively associated: time since injury (P=0.01), perceived physical health status (P<0.001) and social participation (P<0.001). There is little data on the treatment of SD outside of case studies.Quantitative analysis could not be performed due to differences in the studies included in their design, evaluation tools, choice of TBI severity criteria, and post-TBI timeframes. Four unavailable articles could not be consulted.SD are common after TBI but remain poorly evaluated in clinical practice, despite their impact on patients and their partners. Their evaluation and treatment should be part of the overall management of patients after TBI. Nevertheless, there is currently no validated tool in French to evaluate these SD, nor are there any guidelines on their treatment.