Title:Dataset supporting the study “Clinical Characteristics at the Diagnosis of New Primary Melanoma in Italy: A Multicenter Retrospective Study Before and After the COVID-19 Pandemic” Description:This dataset contains anonymized, individual-level clinical data collected within a retrospective multicenter study conducted across Italian melanoma referral centers participating in the Società Italiana di Chirurgia Oncologica (SICO) network. The dataset was developed to investigate temporal changes in the clinical presentation of newly diagnosed primary cutaneous melanoma across four predefined time periods spanning the COVID-19 pandemic and the subsequent recovery phase.