Asunto(s)
Oncocercosis/patología , Enfermedades Cutáneas Parasitarias/patología , Adulto , Femenino , Humanos , Malaria Falciparum/complicaciones , Malaria Falciparum/tratamiento farmacológico , Oncocercosis/complicaciones , Oncocercosis/tratamiento farmacológico , Enfermedades Cutáneas Parasitarias/complicaciones , Enfermedades Cutáneas Parasitarias/terapiaRESUMEN
Varnishes are liquid products that solidify when exposed to air. They are used to cover, protect, and embellish surfaces. Varnishes contain agglutinants and volatile solvents. The main agglutinants are epoxy resins and acrylates, and these acrylates are the substances that produce sensitization most of the time. We explain the use and handling of these varnishes and present four cases of occupational sensitization to acrylic resins present in wood varnishes used by four workers.
Asunto(s)
Acrilatos/efectos adversos , Alérgenos/efectos adversos , Dermatitis Alérgica por Contacto/diagnóstico , Dermatitis Profesional/diagnóstico , Pintura/efectos adversos , Adulto , Dermatitis Alérgica por Contacto/etiología , Dermatitis Alérgica por Contacto/patología , Dermatitis Profesional/etiología , Dermatitis Profesional/patología , Diagnóstico Diferencial , Femenino , Humanos , Masculino , Pruebas del ParcheRESUMEN
We present a patient with phacomatosis pigmentokeratotica (PPK) who developed several basal cell carcinomas on epidermal nevus lesions in adult life. PPK shows an elevated incidence of development of malignant lesions both on the sebaceous or epidermal nevus component as well as on the nevus spilus one.
Asunto(s)
Carcinoma Basocelular , Neoplasias Primarias Múltiples , Síndromes Neurocutáneos , Neoplasias Cutáneas , Adulto , Biopsia , Carcinoma Basocelular/patología , Humanos , Masculino , Neoplasias Primarias Múltiples/patología , Síndromes Neurocutáneos/complicaciones , Síndromes Neurocutáneos/patología , Piel/patología , Neoplasias Cutáneas/patologíaRESUMEN
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.