Validation of new items for diagnosing primary hyperhidrosis and the prevalence of primary hyperhidrosis.

Background: The Multi-Specialty Working Group on the Recognition, Diagnosis, and Treatment of Primary Focal Hyperhidrosis developed evidence-based consensus criteria for diagnosing primary hyperhidrosis.

Objectives: To validate new questionnaire items for self-reported classification of primary hyperhidrosis based on the consensus criteria and to estimate the prevalence of primary hyperhidrosis.

Methods: This is a cross-sectional diagnostic accuracy study.

Diagnostic accuracy of a short-form version of the diagnostic criteria for primary hyperhidrosis.

Introduction: The gold standard method for diagnosing primary hyperhidrosis (PHH) is based on seven patient-reported criteria. By determining an individual criterion's diagnostic accuracy, one can identify short-version classification models.

Methods: In this cross-sectional study, data were collected from Danish blood donors in 2021.