International Journal of Caring Sciences September -December 2020 Volume 13 | Issue 3| Page 1847 www.internationaljournalofcaringsciences.org Original Article The Effect of Peer Group Education on Menstrual Hygiene Management in Knowledge of Prevention of Pruritus Vulvae in Adolescents Ririn Harini Maternity Nursing Department, Faculty of Health Science, Muhammadiyah University of Malang, Indonesia Anggraini Dwi Kurnia Family and Community Health Nursing Department, Faculty of Health Science, Muhammadiyah University of Malang, Indonesia Adilla Zenara Nafisa Bachelor Nursing Student, Faculty of Health Science, Muhammadiyah University of Malang, Indonesia Correspondence: Anggraini Dwi Kurnia, Family and Community Health Nursing Department, Faculty of Health Science, Muhammadiyah University of Malang, Indonesia e-mail dwi_kurnia@umm.ac.id Abstract Background: Teenage girls during puberty will experience menstruation. If they are unable to care for their reproductive organs during menstruation, it will cause several health problems, one of which is pruritus vulvae. The purpose of this study was to determine the effect of peer group education on menstrual hygiene management on knowledge of prevention of pruritus vulvae in adolescents. Method: The design of this study used a pre-experimental design with one group pre-post test. The sample in this study was 26 students at Sunan Kalijaga Joining Islamic Boarding School. The method of data collection uses a questionnaire before and after given peer group education. Analysis of data using the Wilcoxon Signed Rank test with a significance of 0.05. Results: The results of this study showed that the majority of respondents had sufficient knowledge about management of menstrual hygiene to the knowledge of prevention of pruritus vulvae before doing peer group education with an average of 14.69 while after peer group education, an average of 19.57 was obtained. The results of the data analysis test using the Wilcoxon Signed Rank obtained the effect of peer group education on menstrual hygiene management on pruritus vulvae prevention knowledge in adolescents with p values = 0,000 and α = 0.05. Conclusion: There is an improvement in knowledge about menstrual hygiene management to the knowledge of prevention of pruritus vulvae in adolescents after peer group education. Based on the results obtained, the peer group education is effectively used for learning methods. Keywords: Peer Group Education, Prevention of Pruritus Vulva Introduction Growth in each individual takes place continuously and cannot be repeated again. Every individual experiences stages of growth or time in his life, one of which is adolescence. In adolescence there are physical changes, both structural and function. In general, the occurrence of very rapid physical growth is in early adolescence (12-18 years). Teenagers not only grow in terms of size, but also experience functional progress, especially sexual organs or puberty. In young women at puberty is characterized by menstruation. If they are unable to take care of their reproductive organs during menstruation, it will cause several health problems (irianto, 2015). Health problems that can occur are irritation, inflammation, vaginal secretions and vulvar pruritus. Pruritus vulvae, this is an early sign of vaginitis. Pruritus vulvae itself is an unpleasant