Allergic contact dermatitis related to para-phenylendiamine (PPD) from temporary black henna tattoos and hair dyes has become an epidemic in recent years. Several cases of adverse skin reactions to PPD have been reported in the literature. Herein, we present a case of angioedema-like allergic contact dermatitis related to hair coloring with henna.

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...

BACKGROUND Hand eczema is not uncommon in children but it is rarely studied using skin-prick tests. Few reports have addressed their usefulness in children and none has specifically analyzed their use in children with hand eczema. MATERIAL AND METHODS We performed a retrospective study of all children up to 16years of age with hand eczema who were assessed in the Department of Dermatology at ...

Diethyl sebacate is used in topical medicaments in United States and Japan. We described a case of allergic contact dermatitis from diethyl sebacate in a topical antimycotic medicament. Allergic reaction to diethyl sebacate is likely more common because our group has found three of eight sensitized cases. We believe that an investigation regarding the sensitized frequency to diethyl sebacate wo...

Allergic contact dermatitis caused by phenylethyl resorcinol [4-(1-phenylethyl)-1,3-benzenediol], a skin-lightening agent in cosmetics Michi Gohara1,2, Akiko Yagami1, Kayoko Suzuki3, Yusuke Morita1, Akiyo Sano1, Yohei Iwata1, Takashi Hashimoto2 and Kayoko Matsunaga1 1Department of Dermatology, Fujita Health University School of Medicine, Aichi, 470-1192, Japan, 2Department of Dermatology, Kurum...

Irritant or allergic contact dermatitis usually presents as an eczematous process, clinically characterized by erythematoedematovesicous lesions with intense itching in the acute phase. Such manifestations become erythematous-scaly as the condition progresses to the subacute phase and papular-hyperkeratotic in the chronic phase. Not infrequently, however, contact dermatitis presents with nonecz...

Allergic contact dermatitis due to plants is common. Potentially allergenic plants and plant products are found in many everyday environments, such as the home, the garden, the workplace, and recreational settings. By improving our knowledge of allergenic plant-derived chemical compounds, we will be better positioned to identify novel allergens. We review the most relevant chemical allergens th...

Allergic contact dermatitis affects about 5% of men and 11% of women in industrialized countries and is one of the leading causes for occupational diseases. In an animal model for cutaneous contact hypersensitivity, we show that mice lacking both known cannabinoid receptors display exacerbated allergic inflammation. In contrast, fatty acid amide hydrolase-deficient mice, which have increased le...

Introduction: Allergic and irritant compounds are frequent in nature, and the environmental allergic factors which can induce or exacerbate eczema are different and often unknown in different areas. The aim of this study was to determine the frequency of contact dermatitis in patients with chronic dermatitis referring to dermatology clinics in kerman. Methods: In this descriptive study, standar...

The leaves, nuts and sarcotesta of Ginkgo biloba L. (Ginkgoaceae) are used in China not only for medical purposes, but also in ‘health foods’ and cosmetics. Cases of allergic contact dermatitis caused by ginkgo leaves, fruits and nuts have been previously reported (1–3), including occupational contact dermatitis in Central Europe (1). We report a case of allergic contact dermatitis caused by G....