This erratum is being published to correct the error on page 401 of the article entitled 'Clustering the Clinical Course of Chronic Urticaria Using a Longitudinal Database: Effects on Urticaria Remission' by Young-Min Ye, Jiwon Yoon, Seong-Dae Woo, Jae-Hyuk Jang, Youngsoo Lee, Hyun-Young Lee, Yoo Seob Shin, Dong-Ho Nahm, Hae-Sim Park in Allergy Asthma Immunol Res. 2021 May;13(3):390-403, https://doi.org/10.4168/aair.2021.13.3.390 as follows. The ACKNOWLEDGMENTS section should be added. The authors apologize for any inconvenience that this may have caused.