Reis, MartaTomé, GinaRamiro, LúciaGaspar, SusanaMatos, MG2020-04-172020-04-172020International Journal of Education Humanities and Social Science, Vol. 3, No. 01, p. 79-92; 20202582-0745http://hdl.handle.net/10451/42933Copyright © 2020 IJEHSS - International Journal of Education Humanities and Social ScienceSelf-harm behaviors have been increasing systematically, particularly in adolescents. The national HBSC study evaluated the prevalence of self-harm behaviors and associated risk factors in Portuguese adolescents. The sample consisted of 5695 adolescents, of whom 46.1% were boys, with a mean age of 15 years. The results showed that 18% reported having experienced self-harm behavior. Regarding the risk factors associated with "self- harm", it was found that young people, with more symptoms, more depression, more unhappy, with lower quality of life, worse relationship with their parents and absence of family support were more likely to have engaged in self-harm behaviors.engSelf-harmPrevalenceRisk factorsProtective factorsAdolescentsPortugaljournal article