Allergic contact dermatitis (ACD) may complicate the clinical course of atopic dermatitis (AD), and patch testing remains the criterion standard for diagnosing ACD. To date, there have been no guidelines or consensus recommendations on when and how to patch test individuals with AD. Failure to patch test when appropriate may result in overlooking an important and potentially curable complicatin...

Formaldehyde is a colorless gas with a pungent odor that is widely used as a preservative in toiletries and cosmetics and in products for household and industrial use. Both formaldehyde itself and substances that can release it are a common cause of allergic contact dermatitis. This condition often becomes chronic, given that these allergens are found nearly everywhere and it is difficult for p...

Thrombocid® ointment (Lacer, Barcelona, Spain) is widely used in Spain and other countries for varicose veins and 22 hematomas. To our knowledge, there are no reported cases of allergic contact dermatitis following its use. Herein we present 23 two cases of allergic contact dermatitis to Thrombocid® ointment, owing to cetearyl alcohol.

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...

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...

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...

Results Seven of the 41 patients had positive reactions to textile related allergens on the screening or textile series and five were thought to be work-related. Four patients who were patch test positive with the textile series were also positive to relevant allergens on the screening series. Two patients with work-related textile dermatitis were patch test positive to the textile series but n...