Objective:

To develop a scale for assessing postinflammatory hyperpigmentation, as current measures are limited.

Approach:

• Scale Development: Researchers created the Post-Inflammatory Hyperpigmentation Area and Severity Index (PIHASI) scale.
• Measurement Method: Colorimetry was used to examine patients with diverse skin tones and grade hyperpigmentation.
• Comparison of Scales: Hyperpigmentation was graded using the PIHASI scale, the Post-Inflammatory Dyspigmentation Area and Severity Index (PIDASI) scale, and a standard scale.

Key Findings:

• The PIHASI and PIDASI scales corresponded with objective measurements of hyperpigmentation severity across different skin tones.
• The PIHASI scale is simpler than the PIDASI and can be used in clinical settings.

Interpretation:

Conclusion:

Sources:

• Journal of the American Academy of Dermatology
• Boston University Chobanian & Avedisian School of Medicine Press Release