The induction of contact allergy to fragrance ingredients and the consequent risk of allergic contact dermatitis (ACD) present a human health concern that cannot be ignored. The problem arises when exposure exceeds safe levels, but the source(s) of exposure which lead to induction often remain unclear. This contrasts with the elicitation of ACD, where the eczema frequently can be traced to spec...

Antoine Badaoui1, Olivier Bayrou1, Charlotte Fite2, Camille Frances1, Angele Soria1,3,4 and Catherine Pecquet1 1Dermatologie-Allergologie, Hôpital Tenon, HUEP, APHP, 75020 Paris, France, 2Dermatologie, Hôpital Bichat, APHP, 75018 Paris, France, 3Unité Mixte de Recherche de Santé (UMR S) CR7, Centre d’Immunologie et des Maladies Infectieuses – Paris (Cimi-Paris), UPMC Université Paris 06, Sorbon...

BACKGROUND Hair dye products constitute an important source of allergen exposure, and contribute importantly to allergic contact dermatitis in consumers and hairdressers. OBJECTIVES To evaluate the presence of potent contact sensitizers in oxidative hair dye products intended for home use on the US market. METHODS Ingredient labels of 107 hair dyes from 10 major brands were examined and use...

Local anesthetics are widely used in clinical practice, and adverse effects are not uncommon. Delayed hypersensitivity reactions are among the most common effects, but immediate-type reactions may also occur. Patch testing should be considered in patients with hypersensitivity reactions. We present a case of allergic contact dermatitis to benzocaine that was detected incidentally by patch testi...

Henna stone is a lesser-known commercially available material used to obtain black henna paste (1). In some countries, including Turkey, local herb sellers sell it as ‘natural stone’, a so-called natural source for black henna. The stone has to be crushed into powder first, and then mixed with water, hydrogen peroxide and, sometimes, natural henna to obtain black henna paste for the purpose of ...

Sir, Allergic contact dermatitis caused by topically applied agents is a problem that physicians seek to avoid during the treatment of skin diseases. In this report, we present a case of allergic contact dermatitis caused by luliconazole, an imidazole anti-fungal drug. Patch testing suggested that luliconazole sensitivity might have been attributable to its dithioacetal structure and revealed t...

68 Irritant contact dermatitis (ICD) is a common skin condition and a risk factor for allergic contact dermatitis. The prevalence of this disease in the general population varies between 1.7% and 6.3% and is increasing. The role of the patch test in detection of contact sensitivity is of prime importance. Patch tests should be used to identify topical agents that may be responsible for exacerba...

There are a number of reports in the literature of allergic contact dermatitis as a result of exposure to the sawdust and plant parts of Grevillea robusta. While this tree is prevalent in New Zealand, there seems to have been no previous published accounts of contact dermatitis, although anecdotal evidence indicates that such cases may be common. Two brief case reports are provided regarding se...

This paper describes the development and significance of online systems for the collection and analysis of medical data (patch test results) with a web application. Modern digital tools greatly aid in collecting, combining, and preserving the data in a way that is friendly, undemanding and time-efficient for the dermatologist. Creating a central database for the results of patch testing provide...