Ichthyosis

The goal of this observational study is to conduct a prospective assessment of the individual Burden of 9 rare skin diseases to assess disability in the broadest sense of the term (psychological, social, economic and physical) for patients and/or families. Two types of indicators will be used to reach this objective : 1. an individual burden score calculated based on a burden questionnaire created specifically, approved and designed to understand the tendency to changes in care and lifestyles. The burden questionnaire should be used by patients and/or their family themselves in self-assessment. 2. a descriptive analysis of all resources (medical and non-medical) used by the family unit to manage the disease.

The goal of this clinical trial is to learn about deucravacitinib treatment in adults with inflammatory epidermal genodermatoses . The main question it aims to answer are: describe efficacity and safety of this treatment. Participants will take treatments and have to use bullets during the study period.

The goal of this observational study is to understand the perspectives and needs of patients with genodermatoses and their partners who wish to have children, regarding their decision-making process and their consideration of reproductive options. Additionally, the investigators aim to investigate the level of knowledge and perspectives of healthcare professionals (such as clinical geneticists, dermatologists and other clinicians involved), and want to explore to what extent patients and their partners are well informed about these reproductive options. To achieve this, the investigators will conduct individual semi-structured qualitative interviews with participants affected by genodermatoses (and their partners) and with healthcare professionals.

This study will evaluate the efficacy and safety of intravenous gentamicin in congenital ichthyosis due to a non-sens mutation. The primary objective is the severity of scales and erythema at the third month, compared to baseline. Secondary objectives will include: the importance of itching, trans epidermal water loss, cutaneous expression of the targeted protein, the security of the drug and patients' satisfaction.