As suggested by the title, this dissertation is based on the term "object" as a bridge between the experience of phobia and the use of the mask. The choice of the phobia as a theme, is part of our project with adolescents, which highlighted the massive presence of this experience. This evidence did not fully satisfy the study for the following reasons. The knowledge about the presence of such phenomenon, can give an account of the presence of phobic experience and can also provide an opportunity to place the subject within a clinical reference group. It allows us to observe the subject’s proximity or distance from the beloved "normativity". In our case, our purpose is represented by the comprehension of the attribution of meaning. The clinical observation allows us to evoke the psychological and phenomenological dynamics and also the modalities of the subject to reach knowledge, without which the objects would remain threatening in themselves and without a certain specification