Conceptually, the labelization in medical language, is the classification or the identification of a patient by his symptoms or disease, as if they were classificatory properties. In the medical field, it is assumed to be frequent. It is the result of a linguistic phenomenon: the adjectival nominalization. In Spanish, the later is ruled by semantic properties which explain why the occurrencies of that kind of Nominal Group without Noun are so recurrent in this field. Indeed medical adjectives are supposed to be adapted to this semantic marking.