The third World Congress on Rare Skin Diseases in Versailles, France, from 1 to 3 July 2026. Objective is: To learn on diagnosis (including pathophysiology and disease classification) and management of rare and complex skin disorders (skin cancers and aggressive tumors, autoimmune bullous diseases, complex vascular malformations and tumors, auto-inflammatory and autoimmune cutaneous disorders, toxiderma, ectodermal dysplasia and incontinentia pigmenti, DNA Repair Disorders & photosensitivity, monogenic fibrosing diseases, epidermolysis bullosa and skin fragility, epidermal differentiation disorders). To develop a multidisciplinary approach and improve their skills to manage common problems in rare and complex skin disorders To know more on last research findings and tools in the field of skin biology, genetics, therapeutics To learn more on patient engagement and empowerment as well as patient education programs