Spanish Academy of Dermatology and Venereology (AEDV) Melanoma Registry

The goal of this patient registry is to describe risk factors for bad prognosis of melanoma in Spain. The main questions it aims to answer are: * To describe socioeconomical individual risk factors associated with melanoma prognosis, such as gender, residence area or socioeconomic level. * To describe potentially modifiable characteristics of health care associated with prognosis, such as waiting times, type of centre that makes the diagnosis or use of teledermatology Participants data will be gathered for analysis, without any change in the way that they are being treated.