Case ReportPublished 4 September 2026Severe anaphylactic shock suspectedly induced by injection of recombinant humanized type III collagen lyophilized fiber for facial skin improvement: a case reportJunjie Liu · Wenjing Yan · Jing Liu · Bowen Yang · Yong DuFrontiers in Allergydoi 10.3389/falgy.2026.1901705