The German Itch Questionnaire, validation in different diagnoses

• Conditions: urticaria, psoriasis, atopic eczema, patients with pruritus and kidney disease, patients with pruritus and liver disease, patients with pruritus and chronic prurigo, pruritus of multifactorial genesis, somatoform pruritus or neuropahtic pruritus; L29.8; L29.9; F45.8; Other pruritus; Pruritus, unspecified; Other somatoform disorders

• Registration Number: DRKS00013971
• Lead Sponsor: niversitätsklinikum Heidelberg,Verantwortlich für Organisation der Studie und Ethikantrag / Responsible for organisation of study and ethics committee application: Prof. Elke Weisshaar

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2018-04-23
• Study Completion: 2020-12-31
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Complete
• Sex: All
• Target Recruitment: 362

Inclusion Criteria

patients with chronic pruritus >= 6 weeks
- written informed consent
- personal introduction in the study center
- capacity for consent

Exclusion Criteria

- deficient knowledge of the language
- limited vigilance, e.g. dementia, sedatives

Study & Design

• Study Type: observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Hypothesis: Because of the itch-specific anamnesis, the questionnaire can differentiate between different diagnoses. The present study should provide intial approches of the validity. Therefore, construct validity and criterion validity will be assesd.

Secondary Outcome Measures

Name	Time	Method
On a subsample, the retest-reliability of the itch-specific anamnesis will be assessed after 24 hours. On a second subsample, the sensitivity to change/ stability will be assessed after 1 week.