Abstract
Objective: identify through an integrative review the difficulties of pregnant adolescent to start prenatal care at the basic health unit. Methods: Descriptive study with a qualitative approach, using the Integrative Literature Review as a method. The search took place in the Virtual Health Library, indexed in the following computerized databases: Latin American Caribbean Literature in Health Sciences (LILACS), International Literature in Health Sciences (SCIELO), and in the Nursing Database (BDENF) , from May 12 to June 7, 2019, using the following descriptors: adhesion; teenager; pregnant; prenatal. Results: The final sample consists of 08 articles. There are several factors that may hinder the adherence of pregnant adolescent to prenatal care. Among them, the following stand out: absence of a partner during pregnancy, socioeconomic factors, and problems related to work process of the basic health unit. Final considerations: There are several problems faced by pregnant teenagers, but all of them run through emotional, psychological and socioeconomic spheres.