Biomedical subjects
Publications and source records attributed to A Dooms-Goossens.
The case of a 40-year-old woman with severe edema of the face and neck after the injection of a local dental anesthetic is presented. The reaction is attributed to the presence of sodium metabisulfite, and antioxidant, in the local anesthetic. Both the anesthetic and the sodium metabisulfite gave a delayed positive patch-test response.
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A computerized database with the complete composition of pharmaceutical products and some cosmetics helps the patient with an allergic contact dermatitis reaction to avoid his specific allergens. Together with a database with patient information (12000 cases) this product, file serves as the basis for an expert system that assists the dermatologist during his every day clinical practice. The use of the computer in the field of contact dermatitis has gained much interest in the course of the last decade. In fact, the computer can be a particularly helpful tool in: 1. The storage of large amounts of data that can help to identify the patient's allergen microenvironment: --literature: articles related to contact dermatitis problems; --product information such as, for example, the composition of pharmaceutical, cosmetics, and industrial materials; --the dermatologist: the filling in of a standardized anamnesis from also helps to assure that relevant clinical data is not overlooked. 2. The diagnosis of allergic contact dermatitis: on the basis of all these data stored, an expert system can be developed to provide targeted information to assist the physician with the anamnesis of a new patient. Depending on the profile of the patient, several factors that could be at the source of the contact dermatitis, such as the patient's profession, hobbies, and use of pharmaceutical products and cosmetics, can be considered, thus increasing the efficiency of the allergological examination considerably. 3. Research in contact dermatitis: --The data can be used for epidemiological analyses in behalf of the patients, the medical profession, the industry, and the authorities.(ABSTRACT TRUNCATED AT 250 WORDS)
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No seasonal influence of UV sunlight on patch test reactions in humans over a period of 9 years of clinical practice was found in this retrospective study of almost 8000 patients. Although the mean UV monthly dose varies seasonally, up in the summer and down in the winter, no significant differences could be identified for patch test reactions, either for the mean number of positive test reactions or for the intensity of the skin reaction or for the id-like spread reactions seen in summer or winter. Furthermore, no short-term influences of UV exposure during the weekend preceding patch testing could be demonstrated. Therefore, reliable patch-test results can be expected at any season of the year from a general population, at least in Belgian-type climates.
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A cleaning woman in a restaurant became sensitized to thiourea in a silver polish. The dermatitis persisted for several months and occasionally flared up after exposure to sunlight, even after she no longer used the product. Patch testing and photopatch testing showed that she had both contact and photocontact allergy.
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