11 citations
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January 2015 in “Dermatology” This study found multiple factors, both inherited and acquired, that may lead to bradykinin-mediated angio-oedema, proposing a new classification based on bradykinin production and catabolism imbalance.
16 citations
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August 2011 in “Annals of Allergy Asthma & Immunology” This report describes a case of a 19-year-old woman experiencing severe recurrent angioedema with airway issues, leading to multiple emergency visits and unsuccessful treatment with typical steroid-sparing agents.
6 citations
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October 2016 in “Pediatric Dermatology” This case report describes a unique instance of a 6-year-old girl developing angioedema after treatment with squaric acid dibutylester for alopecia areata.
5 citations
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January 2014 in “Hospital pharmacy” This case report suggests that frequent application of diphenylcyclopropenone 2% solution to the scalp for alopecia areata may lead to scalp angioedema.
March 2026 in “Indian Dermatology Online Journal” This report details a case study where a 40-year-old woman experienced allergic contact dermatitis and angioedema-like symptoms after using PPD-containing hair dye. Patch testing confirmed a positive reaction to PPD, highlighting the substance's potential to cause both T-cell and IgE-mediated hypersensitivity reactions.