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Biomedical subjects

Luis Conde-Salazar

Publications and source records attributed to Luis Conde-Salazar.

10 recordsLinked to original sources
PubMed2006

[Brief history of Actas Dermo-Sifiliográficas].

Actas Dermo-Sifiliográficas was founded by Juan de Azúa in May 1909. The birth of the journal coincided with the founding of the Spanish Academy of Dermatology and Venereology, then known as the Spanish Society of Dermatology and Syphiligraphy, and it is this organization's official publication. Actas Dermo-Sifiliográficas gradually became established, until the year 1936, when its publication was interrupted for 14 months at the start of the Spanish Civil War. It resumed activity in October 1937 under Sainz de Aja, Gay Prieto and Eduardo de Gregorio. In the 1980's, it underwent a crisis that resulted in its exclusion from MEDLINE. Actas Dermo-Sifiliográficas gradually recovered under the management of Drs. Iglesias, Sánchez-Yus, Fernández-Herrera and Torrelo, and it has finally been included once again in the most consulted medical database in the world.

Dermatology↗
PubMed2006

[Aquagenic syringeal acrokeratoderma. Presentation of two cases].

Aquagenic syringeal acrokeratoderma is an infrequently described acquired, transitory keratoderma that is exacerbated when the palms and/or soles are immersed in water. It manifests as whitish or yellowish flattened, translucent papules and plaques, located in areas of pressure or trauma on the palms and/or soles. Involvement is usually bilateral. The histologic features are non-specific, showing a slight dilation of the intraepidermal portion of the eccrine sweat duct. The process tends to remit spontaneously. We present the case of two women, aged 20 and 21.

Adult↗
PubMed2005

Contact dermatitis in hairdressers, 10 years later: patch-test results in 300 hairdressers (1994 to 2003) and comparison with previous study.

BACKGROUND: In the last 20 years, the hairdressing profession has undergone important modifications, mainly because of a change in the substances and techniques used and improved occupational education. OBJECTIVE: To evaluate the modifications in the hairdressing profession and its actual risk of occupational allergic contact dermatitis (OACD). METHODS: We studied all 300 hairdressers seen in our department from 1994 to 2003 and compared the results with those of a previous study of 379 hairdressers who attended our department from 1980 to 1993. All were patch-tested with the European Standard series and specific hairdressing products. As previously, most of the workers were women (93%), with a mean age (23.7 years) slightly higher than that of the workers in our previous study. RESULTS: We found a significant increase in the frequency of positive patch-test responses (78.3% vs 58.8%) and OACD (58% vs 48.8%) with respect to our previous study. We also observed a significant increase in sensitization to most allergens, including p-phenylenediamine base (54% vs 45.9%), 4-aminobenzene (40.7% vs 31.9%), ammonium thioglycolate (2.7% to 12.3%), ammonium persulfate (7.9% to 14.3%), p-toluenediamine sulfate (6.8% to 15.3%), p-aminodiphenylamine (2.9% to 7.7%), o-nitro-4-phenylenediamine (2.1% to 7.3%), and aminophenols (0% to 9%), whereas a decrease was found in sensitization to Disperse Orange (17% vs 32.7%) and thioglycolic acid (15.3% to 3%). CONCLUSION: The high frequency and increase of sensitizations among hairdressers require urgent measures to improve protective measures and their application.

Adolescent↗
PubMed2005

Contact allergy to a cocobolo bracelet.

Tropical woods are highly valued because of their strength, hardness, and resistance to moisture. These characteristics make them easy to work with and extremely durable, and that is why they have been used in the manufacture of wooden jewelry, musical instruments, furniture, and handles of many different objects. We present a case of a 44-year-old man who developed pruritus, erythema, and blistering around his right wrist, corresponding exactly to the area where he had worn a wooden bracelet. Thin-layer chromatography performed with the extract of the shavings revealed (R)-4-methoxydalbergione and obtusaquinone (the main components of cocobolo wood) and (S)-4'-hydroxy-4-methoxydalbergione (in lower amounts). Patch-testing with sawdust from the bracelet resulted in a very strong reaction. Patch tests with the pure constituents yielded +++ reactions to the main sensitizers of cocobolo, including obtusaquinone, but also to sensitizers present in other rosewoods. This last fact can be explained by cross-reactivity between different dalbergiones. Contact dermatitis from tropical woods is more frequent than thought, owing to their high sensitizing properties. An exhaustive search can identify the allergen responsible in many cases.

Adult↗
PubMed2004

Allergic contact urticaria from natural rubber latex in healthcare and non-healthcare workers.

To compare the prevalence of natural rubber latex (NRL) sensitization and allergic contact urticaria from NRL in healthcare and non-healthcare workers, we studied all 1171 patients who attended our clinic during 2001 and 2002. Prick testing for NRL and patch testing with European standard series were performed in all patients and an additional rubber series in those who had contact with rubber. Specific immunoglobulin E (IgE) levels against NRL and tropical fruits were measured when prick testing was positive. Sensitization to NRL (positive prick test and specific IgE levels) was much more common in healthcare workers than that in non-healthcare workers, 16.7 versus 2.3%. Among the non-healthcare workers, sensitization to NRL was more common in food handlers (17.1%), construction workers (6.6%), painters (6.2%), hairdressers (5.1%) and cleaners (3.8%). The difference in the prevalence of specific IgE to tropical fruits was not significant. Allergic contact urticaria from NRL was also much more frequent in healthcare workers, 71.4 versus 28.6%. In conclusion, sensitization to NRL and allergic contact urticaria from NRL are more common in healthcare workers, but this is a growing problem in non-healthcare workers and should be investigated in all workers with a history of NRL intolerance or who have contact with NRL.

Dermatitis, Occupational↗
PubMed2004

Occupational allergic contact dermatitis from antioxidant amines in a dental technician.

We describe an 18-year-old dental technician who presented with dry hyperkeratotic lesions on his left palm that were limited to an area that was in contact with a container in which he had prepared the molds for a dental prosthesis. On patch testing, he had a positive reaction to black rubber mix and its components N-cyclohexyl-N'-phenyl-4-phenylenediamine, N,N'-diphenyl-4-phenylenediamine, and N-isopropyl-N'-phenyl-4-phenylenediamine, as well as to a piece of the rubber container. Thin-layer chromatography (TLC) of a piece of the rubber container confirmed the presence of the para-phenylenediamine mix. Results of patch-testing with TLC were positive after 48 and 96 hours. The lesions resolved when the patient stopped using the container. The patient was diagnosed with occupational allergic contact dermatitis. We also review the dermatoses caused by antioxidant amines.

2-Naphthylamine↗
PubMed2003

Dermatitis artefacta?

A 35-year-old man presented with a 2-month history of intensely pruritic excoriated and crusted linear lesions on the dorsa of the left hand and left forearm (Fig 1). The patient had worked in construction for 2 years, and his job consisted mainly in covering the facades of buildings with cement. The patient was right-handed and used a black rubber glove as a protective measure only on his left hand (Fig 2). He reported that the lesions resolved partially during holidays and weekends and clearly flared in association with his work. There was no history of atopic dermatitis, drug use, or intolerance to metals, rubber, or fruits. On physical examination, linear excoriations with crusts were observed on the dorsa of the left hand, extending to the ventral and dorsal aspects of the forearm, involving the whole area that was in contact with the glove. Lichenified erythematous plaques and excoriations on the dorsal surface of the metacarpophalangeal joints and scaly lesions on the dorsal surfaces of the fingers were also present. On the palm, only discrete hyperkeratosis was seen. The right hand and forearm were free of lesions. He complained of intense pruritus when wearing the rubber glove and admitted to continuous scratching to relieve his discomfort, inducing the linear and excoriated lesions. Treatment with topical corticosteroids was initiated, with progressive resolution of the lesions.

Adult↗