%0 Journal Article %T Immunological reaction after facial hyaluronic acid injection %A Ali Modarressi %A Antoine Homsy %A Brigitte Pittet-CušŠnod %A Eva Meia Rščegg %A Peter Jandus %J Archive of "Case Reports in Plastic Surgery & Hand Surgery". %D 2017 %R 10.1080/23320885.2017.1356202 %X We report two rare cases of inflammatory reactions with multiple subcutaneous facial painful collections after Hyaluronic acid injections, expose their management and discuss aetiologic hypothesis. Due to unfavourable evolution despite antibiotic treatment, surgical drainage was performed. Immune-mediated delayed hypersensitivity reactions were the most probable cause %K Hyaluronic acid %K hypersensitivity %K complications %K risk factors %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5532757/