A 35-year-old male was referred because of eczema on the arms and lips that occurred episodically. He worked in a drug-manufacturing plant, and noticed that the episodes of eczema coincided with the production cycles of thebaine (CAS no. 115-37-7) and oripavine (CAS no. 467-04-9), but not with the production cycles of morphine (CAS no. 57-27-2) and noscapine (CAS no. 128-62-1). The eczema start...

INTRODUCTION Black-spot poison ivy is an uncommon clinical manifestation of contact with Toxicodendron plants. Unlike allergic contact dermatitis, which typically manifests in sensitized individuals within 2448 hours, the black lacquer that results from oxidation of the oleoresin after contact with the plant develops within hours of exposure and precedes allergic contact dermatitis, in some cas...

BACKGROUND Background: Patch tests are an efficient method to confirm the etiological diagnosis of allergic contact dermatitis. OBJECTIVES 1) To determine the permanence of results between two tests performed with an interval of at least one year, in patients with allergic contact dermatitis; 2) To compare the positive results according to rates of intensity; 3) To evaluate the permanence of ...

The objective of this article is to describe allergic contact dermatitis from sodium isopropyl xanthate, potassium amyl xanthate, and carbamates in a geotechnician, to discuss possible cross-reactions, and to report the widespread use of carbamates and mercaptobenzothiazole in mining processes.

1. Textiles and shoes. In: Fisher’s contact dermatitis. 6th ed. Hamilton, Ontario: Bc Decker Inc.; 2008. p. 339--69. 2. Warshaw EM, Schram SE, Belsito DV, DeLeo VA, Fowler Jr JF, Maibach HI, et al. Shoe allergens: retrospective analysis of cross-sectional data from the North American contact dermatitis group, 2001--2004. Dermatitis. 2007;18:191. 3. Fleming AJ. The provocative test for assaying ...

Irritant contact dermatitis is a result of activated innate immune response to various external stimuli and consists of complex interplay which involves skin barrier disruption, cellular changes, and release of proinflammatory mediators. In this review, we will focus on key cytokines and chemokines involved in the pathogenesis of irritant contact dermatitis and also contrast the differences bet...

Chromium is widely used in various industries including construction sector. Skin contact with cement has been associated with allergic or irritant contact dermatitis. Contact dermatitis is one of the most frequently reported health problems among construction workers. Irritant contact dermatitis from cement ranges from cement burns to cumulative irritant contact dermatitis. Cement burns are ra...

Emergency department visits due to dermatologic disease is quite rare. Euphorbia helioscopia is a widely distributed plant in rural areas. E. helioscopia related contact dermatitis (Irritant contact dermatitis or allergic contact dermatitis) are known however only a few case reported in literature. We are reporting on three patients with contact dermatitis from E. helioscopia. Irritant contact ...

A contact or exogenous dermatitis is one in which an external irritant is the m?st important cause; but a constitutional factor undoubtedly also plays a part, and accounts for the fact that only a certain proportion of a community, in contact with the same irritant, develops dermatitis. Most cases of contact dermatitis clear up quickly when the irritant is removed, but in some the rash persists...