Objective : This study was undertaken to assess the effectiveness of educational package regardingknowledge of Somatic symptom disorders among adolescent girls.Methods : 75 adolescent girls were selected by using non probability convenient sampling technique. Thedata was collected by using a reliable and validated tool to assess the knowledge regarding Somatic symptomdisorders.Results : The quantitative assessment of knowledge regarding Somatic Symptom Disorders revealed thatafter administration of educational package, 56 (74.67%) adolescent girls had average knowledge and19 (25.33%) adolescent girls had adequate level of knowledge. There was significant difference betweenknowledge in pre testand post test after administration of educational package. Also, thepost test knowledgewas statistically associated with educational level of father of adolescent girls (0.043), educational level ofmother of adolescent girls (0.046) and occupation of mother of adolescent girls (0.003). The study revealedthat, the pretest mean score value of knowledge was 9.52 with standard deviation (SD) of 2.21 and thepost-test mean score value of knowledge was17.00 with SD of 4.01 with a mean difference of 7.48.Thecalculated-t value was 13.87. This indicated that there was a high statistical significant difference in the preand post test knowledge level regarding Somatic symptom disorders among adolescent girls, p value 0.05.Conclusion: Results of this research generates evidence that educational package regarding knowledge ofSomatic symptom disorders among adolescent girls was effective.