Sexual dysfunction and associated factors in Chinese Han women with epilepsy

Sexual Dysfunction and Associated Psychiatric Comorbidities Impacting Quality of Life in Epilepsy: A Review of Literature

INTRODUCTION

 Epilepsy is caused by dysfunction in the brain, which is characterized by an enduring disposition for unprovoked seizures that reoccur often, along with the neurological, cognitive, psychological, and social effects of the condition, which are often managed with prolonged and sometimes lifelong medications that involve antiepileptic drugs (AEDs). To confirm the diagnosis of epilepsy, at least two unprovoked seizures occurring greater than 24 hours apart should be reported. This illness affects both children and adults. Patients with epilepsy are more likely to experience sexual dysfunction compared to the general population, which often leads to a poor quality of life. The pathophysiology involved consists of the impact of epilepsy and AEDs on the control of the hypothalamic-pituitary-gonadal axis, consequently resulting in a high risk of developing testicular or ovarian dysfunction, leading to sexual dysfunction in epilepsy patients.

AIM

 This review aims to highlight various studies focusing on the association of developing the risk of sexual dysfunction with psychiatric comorbidities, mainly depression and anxiety, that impact the quality of life in epilepsy patients.

METHODOLOGY

 The search methodology involved articles from the Google Scholar and PubMed databases published between 2018 and 2023. "Sexual dysfunction", "epilepsy", "depression", "anxiety", and "quality of life" were the keywords used to search the articles. The Boolean operator "AND" and "OR" were used in between the keywords used. Following this, a total of 15 articles were included in the review based on the inclusion and exclusion criteria.

CONCLUSION

 The review concluded that epilepsy patients are often affected by sexual dysfunction along with associated psychiatric comorbidities that mainly involve depression and anxiety, consequently impacting their quality of life, as demonstrated by various studies. Sexual dysfunction is a common yet underdiagnosed condition in epilepsy patients due to the stigma attached to it. Hence, neurologists must keep a high index of suspicion for this problem. Furthermore, screening and monitoring for sexual dysfunction should be added to the usual epilepsy work-up.

Sexual function in women of fertile age with epilepsy

PURPOSE

To evaluate Sexual Function Scores in women of childbearing age with epilepsy.

METHOD

Cross-sectional study and comparison of two groups, one with and the other without epilepsy. The instruments used were: semi-structured socioeconomic, demographic and clinical questionnaire; Beck Anxiety and Depression Inventories; Word Health Organization Quality of Life (WHOQOL-brief); Female Sexual Function Index (FSFI); and Female Genital Self Image Scale (FGSIS). Statistical analysis was performed using Fisher's Exact Test, Chi-Square, Mann-Whitney, and Spearman's Correlation, considering p < 0.05 as a measure of significance.

RESULTS

110 women were included (55 with epilepsy and 55 without epilepsy) with a mean age of 32 years. Both groups had sexual dysfunction (with epilepsy: 19.28 vs. without epilepsy: 21.05; p = 0.416). There was no significant difference between groups in the analysis of self-image of the genitalia, Quality of Life, or Anxiety. However, there was a statistical difference in Depression Symptoms (with epilepsy: 11.44 vs. without epilepsy:13.82, p = 0.038). When evaluating the influence of epilepsy on sexual function score, women who used enzyme-inducing drugs had worse scores in desire domain (5.21 vs. 6.65; p = 0.020) and lubrication domain (9.48 vs. 12.95; p = 0.047) when compared to women who used non-enzyme-inducing drugs, respectively. In the correlation of Sexual Function with Anxiety, Depression, Quality of Life, and Self-Image of the genitalia, it was observed that when Depression levels increase, desire is impaired [-0.273(p = 0.043)]. In Quality of Life, the psychological [0.311(p = 0.021)] and environmental [0.268(p = 0.048)] domains positively influenced desire. The social relationships domain improved desire [0.504(p = 0.000)], excitement [0.461(p = 0.000)], lubrication [0.342(p = 0.011)], orgasm [0.425(p = 0.001)], satisfaction [0.449(p = 0.001)], and decreased pain [0.402(p = 0.002)]. Consequently, these influence appeared to improve sexual function [0.521(p = 0.000)].

CONCLUSION

Women of childbearing age with epilepsy have sexual dysfunction. The presence of signs of depression and the use of enzyme-inducing drugs must be carefully analyzed, as they can worsen the sexual function score. Health professionals need to be aware that sexual dysfunction must be investigated because this issue influences the quality of life of these women.

Epilepsy in China: major progress in the past two decades

China has approximately 10 million people with epilepsy. There is a vast epilepsy treatment gap in China, mainly driven by deficiencies in health-care delivery and social discrimination resulting from cultural beliefs about epilepsy. WHO's Global Campaign Against Epilepsy project in China showed that it was possible to treat epilepsy in primary care settings, which was a notable milestone. The China Association Against Epilepsy has been a necessary force to stimulate interest in epilepsy care and research by the medical and scientific community. Nearly 20 different anti-seizure medications are now available in China. Non-pharmacological options are also available, but there are still unmet needs for epilepsy management. The Chinese epilepsy research portfolio is varied, but the areas in which there are the most concentrated focus and expertise are epidemiology and clinical research. The challenges for further improvement in delivering care for people with epilepsy in China are primarily related to public health and reducing inequalities within this vast country.

Correlation of sexual dysfunction with sex hormone and estrogen receptor gene polymorphism in Chinese Han women with epilepsy

OBJECTIVE

Women with epilepsy (WWE) have a high risk of sexual dysfunction (SD). We aimed to investigate the incidence of SD, the correlation between SD, sex hormone and estrogen receptor (ER) gene polymorphism in Chinese Han WWE.

METHODS

This cross-sectional study examined 112 married WWE in the Affiliated Hospital of Yangzhou University who were taking antiepileptic drugs (AEDs) for ≥1 year, and 120 healthy controls without epilepsy, all of Chinese Han nationality. The age, menstruation, fertility of all the subjects and disease details of WWE were recorded. The Chinese version of female sexual function index (FSFI) was used to investigate the sexual function of the subjects. The chemiluminescence method was used for the detection of sex hormones, while polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to determine the ER gene polymorphism. The differences of the sexual function, sex hormone, ER genotype, and allele frequency were compared between the two groups. The correlation between SD, sex hormone and ER gene polymorphism was also analyzed.

RESULTS

(1) A high rate (70.5%) of SD was detected in WWE. (2) The serum prolactin (PRL) level (P = 0.039) and the ratio of estradiol to progesterone (E2/P) (P＜0.001) in the WWE group were significantly higher than those in the control group. The allele frequencies of ERα-PvuII C (P = 0.001) and ERβ-AluI A (P = 0.001) in the WWE group were significantly higher than those in the control group. (3) Binary logistic regression analysis showed that serum testosterone level [odds ratio (OR) = 0.412, 95 % confidence interval (CI): 0.201-0.842, P = 0.015], and PvuII CC genotype [odds ratio (OR) = 6.074, 95 % confidence interval (CI): 1.257-29.352, P = 0.025] were independently correlated with SD.

CONCLUSION

The incidence of SD in Chinese Han WWE is high. High serum testosterone levels may exert a protective effect on sexual function. ERα-PvuII polymorphism is related to the susceptibility of SD, and PvuII CC genotype may be the risk genotype of SD.

Sexual dysfunction in people with epilepsy

Sexual dysfunction is a common comorbidity in people with epilepsy (PWE) that adversely affects their quality of life. Nearly one-half of men and women with epilepsy have sexual dysfunction, but in the majority, this often goes unnoticed. The wide variation in the reported prevalence of sexual dysfunction in PWE is due to the significant heterogeneity among the studies with regard to patient population, type and severity of epilepsy, number and type of antiseizure drugs (ASDs) used, and the tools used for assessing sexual dysfunction. Generally, patients with uncontrolled epilepsy, longer duration of epilepsy, focal epilepsy, higher seizure frequency, and those receiving enzyme-inducing and multiple ASDs are more likely to have sexual dysfunction. Women generally have dysfunction in the domains of desire, while males usually have arousal disorders such as erectile dysfunction and premature ejaculation. There is limited evidence to indicate that sexual function improves in patients rendered seizure-free following epilepsy surgery. Multiple mechanisms including direct effects of epilepsy, effects of ASDs, and psychosocial factors contribute to sexual dysfunction in epilepsy. Circumstantial evidence indicates that seizures and interictal epileptiform discharges can directly affect the hypothalamic-pituitary axis as well as production of gonadal steroids. Enzyme-inducing ASDs cause sexual dysfunction by affecting the metabolism of gonadal steroids. Limited data suggest that newer ASDs including oxcarbazepine, lamotrigine, and levetiracetam cause no or minimal sexual dysfunction. Depression and anxiety significantly contribute to sexual dysfunction in PWE. A multipronged and multidisciplinary approach is essential for optimizing the sexual functions. Every effort should be made to identify and treat reversible causes including changing to nonenzyme-inducing ASDs and to provide symptomatic relief. Large, prospective studies are required to improve our understanding on prevalence and mechanisms of sexual dysfunction in PWE.