Chilblains (inflammatory lesion of the feet or hands) have been reported with an unusual frequency during the confinement period, most commonly in children, teenagers and young adults. The aim of the ECCES study is to find out whether these manifestations of chilblains can be linked to the SARS-CoV-2 coronavirus. For this, an epidemiologic study will compare two types of family (or more precisely people who were confined together in March-April-May): - "case family" in which at least one of the members had chilblains - "comparator family" in which none of the members had chilblains Environment (home lockdown) of the two types of family will be analyzed. Each member of the "family" will be suggested doing a serological test.
Diagnostic Test: Biological sample collection
10mL blood sample
Inclusion Criteria:
- "case family"
- at least one of the members with chilblains
- diagnosis of chilblains (anamnesis and pictures) written informed consent
- "comparator family"
- none of the members with chilblains
- one member matched on age (+/- 1 year) to a patient with chilblains
- written informed consent
Exclusion Criteria:
- Subject legally protected (under judicial protection, guardianship), persons deprived of
liberty
CHU Angers
Angers, France
CHRU Brest
Brest, France
CHU Nantes
Nantes, France
CHU Rennes
Rennes, France
CHRU Tours
Tours, France