Introduction: At present, dengue fever persists as a latent problem for public health in our country. It should also be borne in mind that the cases of dengue fever have presented a growing trend during the last 5 years, with a number of 76 093 cases in 2017 (3.03 times more cases with respect to the year 2016); and 93 deaths, which represents the highest figure in the last 5 years. Objective: To describe the clinical, epidemiological and geographical profile of dengue fever in the EsSalud Lambayeque Network 2017, during El Niño Costero Phenomenon. Material and Methods: Patients of all ages and both sexes with an epidemiological record of a clinical diagnosis of dengue identified by the epidemiological surveillance system, in the EsSalud-Lambayeque Health Care Network, during El Niño Costero Phenomenon. Descriptive statistics with calculation of absolute and relative frequencies for qualitative variables and mean with standard deviation for quantitative and free software QGis 2.14 for georeferencing. Results: The age was 7.2 + 20.4 years, 27.9% from Chiclayo, 52.9% were women; 77% had dengue without warning signs, 1.5% died. Of the 874 cases, 335 ones (38.3%) were positive, and 213 (63.5%) were diagnosed from reference laboratory. The most frequent clinical symptoms and signs were fever, headache, arthralgia and myalgia. The most frequent alarm sign was decrease in platelet. Conclusions: Dengue fever affected the adult female population from Chiclayo more frequently; presenting no clinical warning signs.