Inclusion Criteria:  Major (> 18 years old) Diagnosis of psychogenic pruritus or neuropathic pruritus made in consultation, in day hospital or in hospital, within the dermatology department at the CHRU de Brest Able to understand and agree to sign the information and non-opposition notice No opposition of the patient  Exclusion Criteria:  Patient under legal protection (guardianship, curatorship) Minor (<18 years old) Acute or chronic condition which could limit the patient's ability to the study's participation Inability to understand and sign the information and non-opposition notice Refusal to give no opposition