Allergic contact dermatitis caused by surgical mesh after umbilical hernia surgery

Abstract

Patch tests with 1% ethylenediamine and 1% aminophylline were positive at 48 and 96 hours. These results were consistent with a delayed type IV reaction. In another patient, urticaria was caused by a preparation containing phosphatidylcholine, lipoic acid, vitamin B3, and N-acetylcysteine. No allergological tests were performed; however, according to the authors, phosphatidylcholine was responsible for the urticaria because it is a histamine liberator. 6,8 Mesotherapy is currently regarded as a safe procedure for the cosmetic treatment of localized fat deposits. However, allergic reactions, although apparently rare, should be kept in mind.

A case of immediate‐type allergy from polypropylene in a particle filter mask in a nurse

“…1,9,10 Polypropylene, a declared ingredient of the culprit FFP2 masks in our case, has been described as a cause of contact dermatitis from surgical materials. 9,11 Furthermore, polypropylene and medical masks have been described as triggers of contact urticaria, although in many cases the exact causative substance(s) remained unidentified. 3,5,12 Polypropylene is a polymeric hydrocarbon and generally considered to be inert.…”

“…Several cases of irritant rhinitis, irritant and allergic contact dermatitis, exacerbation of acne or rosacea and contact urticaria have been attributed to the wearing of medical masks 3–5,8 . Identification of culprit allergens in masks is often difficult and hampered by the unwillingness of manufacturers to disclose information on their composition 1,9,10 . Polypropylene, a declared ingredient of the culprit FFP2 masks in our case, has been described as a cause of contact dermatitis from surgical materials 9,11 .…”

“…Identification of culprit allergens in masks is often difficult and hampered by the unwillingness of manufacturers to disclose information on their composition 1,9,10 . Polypropylene, a declared ingredient of the culprit FFP2 masks in our case, has been described as a cause of contact dermatitis from surgical materials 9,11 . Furthermore, polypropylene and medical masks have been described as triggers of contact urticaria, although in many cases the exact causative substance(s) remained unidentified 3,5,12 .…”