Alopecia Areata and Atopic Dermatitis: Common Mechanisms and Emerging Therapeutics

April 2026 in “ Journal of Inflammation Research ”

Alice Tang, Grace Rachko, Flavia Manzo Margiotta, Jasmine Levine, Ester Del Duca, Benjamin Ungar

TLDR Alopecia areata and atopic dermatitis share immune system issues, and treatments like JAK inhibitors can help both.

Alopecia areata (AA) and atopic dermatitis (AD) share significant immunological overlap, with both conditions involving cytokine dysregulation through the JAK-STAT pathway and regulatory T cell dysfunction. Up to 40% of AA patients have atopic comorbidities, and both diseases share genetic susceptibility loci. Key shared biomarkers include elevated IL-4, IL-13, and IgE. JAK inhibitors like baricitinib and dupilumab have shown efficacy in treating both conditions by targeting these pathways. Emerging therapies aim to restore immune homeostasis, offering potential disease-modifying interventions for AA and AD.

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