Related Experiment Video
Updated: Apr 5, 2026
Author Spotlight: Self-Assessment Protocol for Predicting Psoriatic Arthritis in Psoriasis Patients
Published on: March 1, 2024
Erythema of Rosacea: Validation of Patient's Self-Assessment Grading Scale
Background:
Facial erythema is a primary feature of rosacea. Currently, no validated scales exist that can accurately capture a patient's self-assessment of their own facial erythema. During phase 2 studies for brimonidine tartrate gel, a 5-point numeric rating scale was developed as a tool to allow subjects to provide an independent assessment of visible changes to the facial erythema associated with their rosacea.
Objective:
The objective of this study was to validate the revised patient's self-assessment (PSA) scale and evaluate it for statistical reliability and validity in quantification of facial erythema of rosacea.
Methods:
The validity of the PSA scale was evaluated by assessing the test-retest reliability, construct validity, and known-groups validity based on the data collected during a Phase 2b study on brimonidine gel for the treatment of persistent facial erythema of rosacea.
Results:
Based on the results of this evaluation, this PSA scale demonstrated test-retest reliability, construct validity, and known-groups validity.
Limitations:
Study results are most generalizable to those with moderate to severe erythema.
Conclusion:
The PSA is an appropriate scale to assess facial erythema associated with rosacea.
More Related Videos
06:31Precision Implementation of Minimal Erythema Dose MED Testing to Assess Individual Variation in Human Inflammatory Response
Published on: October 3, 2019
03:47Author Spotlight: Advancing Facial Rejuvenation Therapy with Post-Laser Salicylic Acid Application
Published on: September 27, 2024
Related Concept Videos
01:30Assessment of Airway, Skin Color, and Use of Accessory Muscles
Introduction
The initial evaluation of a patient's respiratory system...
01:27Assessment of the Cardiovascular System III: Palpation
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above...
01:25Assessment of apical radial pulse
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
01:29Assessment of the Cardiovascular System II: Inspection
Head and Neck