FIGURE 1

![FIGURE 1: Schematic diagram of the pathophysiological mechanisms underlying non-scarring alopecia subtypes including androgenetic alopecia, alopecia areata, and telogen effluvium.](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12141338/bin/fphar-16-1544068-g001.jpg)

> Source: Rui-Xian Guo et al. "Research progress in the treatment of non-scarring alopecia: mechanism and treat." *Frontiers in pharmacology*, 2025. PMID: [40487405](https://pubmed.ncbi.nlm.nih.gov/40487405/)

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  <img src="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12141338/bin/fphar-16-1544068-g001.jpg" alt="Schematic diagram of the pathophysiological mechanisms underlying non-scarring alopecia subtypes including androgenetic alopecia, alopecia areata, and telogen effluvium." />
  <figcaption>FIGURE 1. Schematic diagram of the pathophysiological mechanisms underlying non-scarring alopecia subtypes including androgenetic alopecia, alopecia areata, and telogen effluvium.<br>  Source: Rui-Xian Guo et al. "Research progress in the treatment of non-scarring alopecia: mechanism and treat." <em>Frontiers in pharmacology</em>, 2025. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/40487405/">40487405</a></figcaption>
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