Inclusion Criteria:  Major patient Patient referred to the Allergology Unit of the Hospital of Angers, in consultation or in Hospitalization - for conducting prick-tests Patient affiliated or beneficiary of a social security scheme Patient with informed consent  Exclusion Criteria:  Pregnant women, parturients Persons deprived of liberty by administrative or judicial decision Persons receiving psychiatric care under duress Adults under legal protection measure People out of state to express consent people not able to understand French language Patients whose skin reactivity prevents interpretation of tests (patients who cannot interrupt anti-histamines or have severe eczema)