Contact urticaria caused by heat-sensitive raw fish allergens.

Patients allergic to fish usually present with skin reactions after handling raw fish. Less frequently, these reactions are seen without symptoms after oral intake, often in chefs and food handlers. We have attempted to explain the skin selectivity of such reactions in a 36-year-old woman with contact urticaria after handling raw fish.

Occupational allergic contact dermatitis from cyanoacrylate.

Cyanoacrylates are widely used in adhesive techniques. Cyanoacrylate adhesives differ physically for the different needs of application, and chemically in function of the size of ester molecules. A 40-year-old man employed at the National Mint and Stamp factory presented with hyperkeratotic lesions on the fingers of the right hand.

Fixed exanthema induced by ultraviolet radiation.

An unusual cutaneous eruption of the feet and lower limbs induced by ultraviolet radiation in a 30-year-old caucasian man is presented. Previous reports in the literature and the present case indicate that sunlight and UV radiation may provoke fixed eruptions themselves without drug exposure.

Occupational allergic contact dermatitis in construction workers.

We report the patch test results of 449 construction workers who came as patients to the Occupational Dermatology Service of the Instituto Nacional de Medicina y Seguridad del Trabajo in Madrid between 1989 and 1993. 90.8% of them were patch tested, because they had cutaneous lesions or a clinical history suggestive of occupational dermatitis.

Sensitization to epoxy resin systems in special flooring workers.

The use of new products in building and public works is increasing, among them being special floor coverings containing epoxy resins and derivatives. These are used principally in heavily frequented areas, such as shopping precincts, hospitals, civic centres, etc., due to their high resistance to wear and tear, environmental factors, etc.

Type IV allergy to rubber additives: a 10-year study of 686 cases.

Background: Rubber additives, mainly vulcanizers and antioxidants, are increasingly a cause of contact dermatitis.

Objective: The aim of the present study was to determine the frequency of type IV allergy to rubber additives.

Methods: Seven thousand patients seen during a 10-year period were evaluated.

Patch test sensitivity to the preservative Kathon CG in Spain.

Kathon CG is a very well studied preservative used in cosmetics and toiletries. It is effective in low concentrations (3 to 15 ppm active ingredients) and exhibits outstanding antimicrobial activity against gram-negative and gram-positive bacteria, yeasts and fungi. Although this biocide is not considered to pose a toxicological hazard at recommended use levels, the sensitizing potential of Kathon CG has been established.