5 Key Takeaways

• 1

  Researchers developed the Post-Inflammatory Hyperpigmentation Area and Severity Index (PIHASI) scale to assess postinflammatory hyperpigmentation.

• 2

  Currently, there are no established measures for postinflammatory hyperpigmentation outside of acne-related scales.

• 3

  The PIHASI scale was evaluated alongside the Post-Inflammatory Dyspigmentation Area and Severity Index (PIDASI) scale and a standard scale.

• 4

  The PIHASI and PIDASI scales corresponded with objective measurements of hyperpigmentation severity across diverse skin tones.

• 5

  The PIHASI scale is simpler than the PIDASI and can be used in clinical settings to track improvement in hyperpigmentation.