Biomedical subjects
Ronald R Brancaccio
Publications and source records attributed to Ronald R Brancaccio.
Contact allergy to food.
Contact allergies to foods, spices, and food additives can occur to individuals in the workplace or at home. Seven different reaction types have been described. These include irritant contact dermatitis, allergic contact dermatitis, contact urticaria, protein contact dermatitis, phototoxic contact dermatitis, photo-allergic contact dermatitis, and systemic contact dermatitis. The causes of each of these are reviewed and an approach to the diagnosis and management of contact allergy to foods, spices, and food additives is formulated.
Multiple contact allergens in a violinist.
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Photocontact allergy to diallyl disulfide.
Although phototoxic reactions to plants are common, photoallergic contact dermatitis to plants and plant products rarely occurs. Our objective was to review the importance of including diallyl disulfide in the evaluation of patients with suspected photosensitivity. Phototests for ultraviolet B, ultraviolet A, and visible light as well as patch tests and photopatch tests for 49 allergens from the New York University Skin and Cancer Unit Photopatch Test Series were performed. Three patients had positive photopatch-test results to diallyl disulfide, which is the allergen in garlic. The authors conclude that although photocontact allergy to diallyl disulfide is rare, this allergen should be included in photopatch-test series.
Systemic contact dermatitis to doxepin.
Although allergic contact dermatitis to topical preparations of doxepin has been published, systemic contact dermatitis from oral doxepin is more of a theoretical consideration and is rarely reported. We report a case of a patient with contact allergy to doxepin hydrochloride 5% cream who developed a systemic contact dermatitis to oral doxepin.
Identification and quantification of para-phenylenediamine in a temporary black henna tattoo.
BACKGROUND: Temporary black henna tattoos are very popular as body adornment. Although contact allergy to natural henna is unusual, the inclusion of hair dye, p-phenylenediamine (PPD), increases the risk of contact sensitization. OBJECTIVE: This study was performed to identify the presence and concentration of PPD in a black henna tattoo mixture to which our patient developed contact allergy. METHODS: The presence of PPD in a black henna tattoo mixture, various samples of commercially available henna powders, and several hair dye products was qualitatively and quantitatively detected using high performance liquid chromatography (HPLC). RESULTS: This study demonstrated that PPD was present in the black henna tattoo mixture at a concentration of 15.7%, which is significantly higher than commercial hair dye preparations. CONCLUSION: The presence of PPD in black henna tattoo mixtures in high concentration poses a health hazard and a risk of allergic contact sensitization with potential long-term consequences.