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. 2021 Jan 10;11(2):433–447. doi: 10.1007/s13555-020-00477-6

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which permits any non-commercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc/4.0/.

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Fig. 1 — The Alopecia Areata-Investigator Global Assessment™ (AA-IGA™) and Scalp Hair Assessment Patient-Reported Outcome (PRO)™, with rating instructions provided in English and Japanese.

The AA-IGA™ and Scalp Hair Assessment PRO™ are subject to copyright owned by Eli Lilly and Company. Permission to use is granted under a Creative Commons Attribution-No Derivatives 4.0 International License. Contact Eli Lilly in the event of any proposed modification. ^aThe Severity of Alopecia Tool [28] is recommended to assess the extent (0–100%) of scalp hair loss