Patient Safety: Acknowledging Acute Angioedema Following Cosmetic Injections

To report a case of acute angioedema following hyaluronic acid filler and onabotulinumtoxinA injection in an individual with allergies, recent viral vaccination, and polymyalgia rheumatica. This is a retrospective case report. A 63-year-old female with a history of allergies, asthma, and polymyalgia rheumatica on lisinopril presented with angioedema 4 hours following facial filler injection and botulinum toxin injection. The patient was successfully treated with epinephrine, diphenhydramine, and methylprednisolone. Although cosmetic injections are commonly performed, clinicians must be vigilant about rare, yet serious side-effects such as angioedema. This case underscores the importance of thoroughly evaluating medical histories before cosmetic injections and addressing patient concerns after the procedure.