Background: Internet social media and availability of mobile devices have an impact on the way people communicate. Adolescents have a wide range of positive and negative impacts come from the use of social media. Aim: Assess the relationship between internet social media addiction and communication patterns among adolescents. Design: A descriptive correlational design was utilized. Setting: The study was carried out at Technical Nursing Institutes in Benha city which consists of 2 Institutes and contain total (320) students from Benha Technical Nursing Institute for girls with total (170) students and from Benha Technical Nursing Institute of Health Insurance for girls with total (150) students. Sample: A Convenience sample of 170 students out of 320 from the above mentioned Technical Nursing Institutes were included in this study. Tools: Data were collected using the following tools: Tool (1) Structured Interview Questionnaire, it consists of two parts: (Part I): Socio-demographic characteristics, (Part II): The Bergens' Facebook Addiction Scale (BFAS). Tool (2): Instagram Addiction Scale (IAS). Tool (3): Adolescent Relationship Scales Questionnaire. Tool (4): The Parent-Adolescent Communication Scale (PACS). Results: About (50.6%) of the studied students were moderate level of facebook addiction, (78.2%) were mild level of instagram addiction, also (71.8%) were fair level of the total adolescent relationship and (68.2%) were average level of total parent-adolescent communication scale. Conclusion: There was positive correlation between Facebook Addiction and Instagram addiction. On the other hand, there was no correlation between Facebook Addiction, adolescent relationship and also parent-adolescent communication, no correlation between Instagram addiction, parent-adolescent communication and also adolescent relationship. Recommendation: Psychological Counseling centers or psychiatric clinics in the schools and institutes for early detection and treatment of students who are at high risk or addicted internet social media.