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Updated: Jun 22, 2026

Measuring Psoriasis Severity at Home
02:28

Measuring Psoriasis Severity at Home

Published on: March 1, 2024

Development and pilot-testing of a psoriasis screening tool.

P L Dominguez1, A Assarpour, H Kuo

  • 1Center for Skin and Related Musculoskeletal Diseases, Department of Dermatology, Harvard Medical School, Brigham and Women's Hospital, Boston, MA 02115, USA.

The British Journal of Dermatology
|July 2, 2009
PubMed
Summary

The Psoriasis Screening Tool (PST) accurately identifies psoriasis in an English-speaking population. This validated tool aids in epidemiological studies and can identify psoriasis phenotypes, even in remote settings.

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Area of Science:

  • Dermatology
  • Epidemiology
  • Public Health

Background:

  • Psoriasis self-report validation is crucial for epidemiological studies, especially when access to dermatologists is limited.
  • Current methods may not accurately capture psoriasis prevalence in diverse populations.

Purpose of the Study:

  • To develop and pilot test the Psoriasis Screening Tool (PST) for use in ambulatory settings.
  • To assess the PST's efficacy in distinguishing individuals with and without psoriasis.

Main Methods:

  • The PST was developed with eight yes/no questions and included typical psoriasis images.
  • 222 dermatology clinic patients completed the PST, with diagnoses confirmed by a dermatologist.
  • Sensitivity and specificity were calculated for the screening tool.

Related Experiment Videos

Last Updated: Jun 22, 2026

Measuring Psoriasis Severity at Home
02:28

Measuring Psoriasis Severity at Home

Published on: March 1, 2024

Main Results:

  • A three-question combination achieved 96.4% sensitivity and 97.3% specificity for psoriasis.
  • Including a pictorial question improved sensitivity to 98.2%.
  • The PST identified various psoriasis phenotypes, including plaque, nail, scalp, and inverse involvement.

Conclusions:

  • The PST effectively distinguishes individuals with psoriasis from those without in an English-speaking outpatient dermatology setting.
  • The tool shows potential for identifying psoriasis phenotypes and collecting data in remote populations.
  • While spectrum bias may be a limitation, the PST is considered a reliable tool for psoriasis information gathering.