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...

In 2013, we raised suspicion that cobalt in leather could be responsible for hitherto unrecognized cases of allergic contact dermatitis. We saw a patient sensitized only to cobalt with clear long-term exposure to cobalt from a leather sofa, and observed resolution of dermatitis following avoidance (1). In 2014,we performed a questionnaire study, which showed a positive and significant associati...

BACKGROUND Currently, cosmetic series (Chemotechnique Diagnostics, Sweden) is the most widely used cosmetic-related patch test in Korea. However, no studies have been conducted on how accurately it reflects the constituents of the cosmetics in Korea. OBJECTIVE We surveyed the constituents of various cosmetics and compare with the cosmetic series, to investigate whether it is accurate in deter...

Propolis, also known as bee glue, is a substance collected by worker bees and it is used as a material for constructing and maintaining their beehives. It has been used topically and orally by humans for its anti-inflammatory properties. However, the growing use of propolis has been paralleled by reports of allergic contact dermatitis as a reaction to the substance. Contact dermatitis with gene...

I am glad to reply to Goldenberg and Jacob’s observations, whom I thank for the kind attention given to my article. As a preliminary consideration, I wish to reiterate that my paper discussed exclusively the exposure to nickel via food; it didn’t discuss the other routes of systemic exposure. It distinguished allergic contact dermatitis (ACD) from systemic nickel allergy syndrome (SNAS) and, wi...

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...

Patch testing is essential for identification of culprit allergens responsible for allergic contact dermatitis. This manuscript reviews how to perform patch testing and how to read and interpret the results.

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.