Hereditary angioedema: A rare but serious and commonly misdiagnosed disease.
Lisa Zacek
PMID 36394625WHAT IT FOUND
Swelling without hives or itching, especially after menses or with unexplained abdominal pain, should raise suspicion for hereditary angioedema.
Antihistamines, epinephrine, and corticosteroids do not treat it, and laryngeal swelling is an emergency.
Key findings
01Angioedema without hives or itching, especially with a personal or family history of recurrent unexplained abdominal pain, should raise suspicion for HAE.
02HAE attacks do not respond to antihistamines, epinephrine, or corticosteroids and require HAE-specific therapy.
03Facial or laryngeal swelling in suspected HAE should be managed as an emergency, with rapid access to on-demand treatment.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The clinical vignette describes a single patient, so it cannot show that a treatment works or how common this presentation is. The article is a narrative review and guideline summary, not a systematic review or original trial, so it does not provide comparative effectiveness data. It does not report how many patients or sources were reviewed, or how recommendations were selected.
The easy way to misread this
Do not conclude from this article that plasma-derived C1-INH is proven effective for all swelling. The vignette describes a single patient, and the article is mainly a narrative review and guideline summary, not a controlled trial.