Few studies report the use of ECT in adolescents. Within a period of 3 years, 9 patients aged 15 to 19 were treated by ECT in our department. Indications were acute schizophrenia, delusional depression and delusional mania, resistant to usual medication. ECT proved to be a safe treatment with good short-term outcome. Long-term outcome did not seem to be modified by treatment. These results are discussed in relation to the use of ECT in adults and adolescents reported in the literature.