---
title: DermNet — Postinflammatory hyperpigmentation
entity_type: Source
canonical_url: https://skinknowledgebase.com/sources/dermnet-postinflammatory-hyperpigmentation
date_modified: 2026-05-11
date_reviewed: 2026-05-11
mcp_eligible: true
source_type: medical_reference
original_source_url: https://dermnetnz.org/topics/postinflammatory-hyperpigmentation
evidence_sources: []
product_fact_sources: []
---

# DermNet — Postinflammatory hyperpigmentation

## Quick Summary

DermNet reference defining PIH and explaining why inflammation can leave pigment behind.

## What Studied

Dermatology reference on postinflammatory hyperpigmentation.

## Main Findings

The page explains pigment change after inflammation and supports acne-trigger context.

## Why It Matters

This source anchors the Dark Spots from Acne Concern definition.

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