RESUMO
Dermatophytosis is the most common skin infectious disturbance in the world. In this research 2,297 patients were evaluated with suspected clinical lesions of dermatophytosis. It was observed that, 534 (23.2%) patients tested positive for dermatophytes. T. rubrum was the most prevalent specie (49.6%; p < or = 0.05), followed by T. tonsurans (34.4%), M. canis (7%) and T. mentagrophytes (6.2%). When the species isolated was correlated with the respective anatomical localization, it was observed that T. tonsurans was the most frequent isolated in scalp lesions (73.9%; p < or = 0.01). On the other hand, T. rubrum was the main specie involved in body lesions (72.8%; p < or = 0.05). Therefore, in scalp infections it was observed that, there was an absolute prevalence of T. tonsurans. This evidence is different from the statistical data collected in the southeast and south of Brazil, as well as from other areas of the world, which still show M. canis as the most frequent microorganism isolated in Tinea capitis.
Assuntos
Doenças Transmissíveis Emergentes/epidemiologia , Tinha do Couro Cabeludo/epidemiologia , Trichophyton , Adolescente , Adulto , Brasil , Criança , Pré-Escolar , Doenças Transmissíveis Emergentes/parasitologia , Ecologia , Feminino , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Tinha do Couro Cabeludo/parasitologia , Trichophyton/isolamento & purificação , Saúde da População UrbanaRESUMO
Nowadays 70% of the world's rubber supply is synthesized artificially. The process involved in its manufacture is vulcanization which requires many chemical substances for speeding the process, as antioxidants to prevent deterioration of rubber, or others. These substances may constitute important sensitizers and thus be responsible for dermatological diseases like contact dermatitis. The objective of this study is to search for the main sensitizers among these rubber chemicals in a population mostly composed by women of a tropical country and compare the results with the ones obtained from previous studies which tested populations mainly composed by men and on different climates.
Assuntos
Dermatite Alérgica de Contato/epidemiologia , Hipersensibilidade ao Látex/epidemiologia , Brasil , Feminino , Hospitais de Ensino , Humanos , Masculino , Testes do Emplastro , Pacientes , Clima TropicalRESUMO
This work consists in an evaluation of the occurrence of nickel contact dermatitis, its distribution between sexes and in which parts of the body the dermatitis usually occurs. It was accomplished a two year (1994-1995) retrospective study of 404 patch-tested patients which had previous clinical diagnosis of contact dermatitis. The occurrence of nickel sensitization was 19.8%, 88.8% of these 19.8% were women and the rest, 11.2%, were men. The lesions were present predominantly on hands, forearms, earlobes and feet. The authors comment about possible variations of occurrence of nickel contact dermatitis in rural areas and/or tropical countries.
Assuntos
Dermatite Alérgica de Contato/epidemiologia , Níquel/efeitos adversos , Brasil , Dermatite Alérgica de Contato/etiologia , Feminino , Humanos , Masculino , Estudos Retrospectivos , Testes CutâneosAssuntos
Ácidos Anacárdicos , Dermatite Alérgica de Contato/epidemiologia , Dermatite Ocupacional/epidemiologia , Dermatoses da Mão/epidemiologia , Plantas Tóxicas , Resorcinóis/efeitos adversos , Salicilatos/efeitos adversos , Brasil/epidemiologia , Estudos de Casos e Controles , Dermatite Ocupacional/prevenção & controle , Feminino , HumanosRESUMO
Clinical and epidemiological aspects of the contact dermatitis by Paederus are studied. This zoodermatosis is observed in many countries of the Ceará, State of Brasil, during the rainy season, specially at the months of april and may. The etiological agent of this disease is an insect of the generus Paederus. Two species were identified in the State: Paederus brasiliensis and Paederus columbinus.
Assuntos
Besouros/química , Dermatite Irritante/etiologia , Adolescente , Adulto , Idoso , Animais , Brasil/epidemiologia , Dermatite Irritante/epidemiologia , Dermatite Irritante/patologia , Dermatite Ocupacional/epidemiologia , Dermatite Ocupacional/etiologia , Dermatite Ocupacional/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
Eighteen patients from the northeastern Brazilian State of Ceara with proven kala-azar were studied for evidence of skin parasitism: two had ulcerative or papular skin lesions and 16 had clinically normal skin. Punch biopsies (3 mm) of intact paraspinal subscapular skin were performed on all patients; in those with papular or ulcerative lesions biopsies also were taken from an active site. One of each of the subscapsular biopsies and half of each biopsy from an active lesion were studied; the other specimens were seeded on NNN Difco Blood Agar Base Medium for parasite culture. The biopsies revealed a discrete to intense mononuclear inflammatory infiltrate, predominantly perivascular in nature. No amastigotes were observed in any tissue sections but 7 of the 18 patients yielded promastigotes on skin culture identified by monoclonal antibodies and by enzyme electrophoresis as Leishmania (Leishmania) chagasi [L. (L.) chagasi]. The isolation of Leishmania (Leishmania) chagasi, the recognized aetiologic agent of visceral leishmaniasis in the New World, from the skin of nearly 40% of 18 AVL patients proves dermatotropism of L. (L.) chagasi occurs and may be frequent in neotropical human visceral leishmaniasis (AVL.). Infected persons with skin parasites could act as a reservoir of infection and allow human to human transmission.
Assuntos
Leishmania donovani/isolamento & purificação , Leishmaniose Visceral/parasitologia , Pele/parasitologia , Adolescente , Adulto , Animais , Brasil , Criança , Pré-Escolar , Humanos , Leishmaniose Visceral/patologia , Masculino , Pele/patologiaRESUMO
Foram realizados 138 testes com histoplasmina e paracoccidioidina no municipio de Pereiro - Ceara, obtendo-se positividade de 6l,5 por cento e 32,1 por cento respectivamente, a estes antigenos. Os autores discutem a possibilidade da coexistencia da histoplasmose e paracoccidioidomicose-infeccao e/ou doenca na regiao
Assuntos
Humanos , Histoplasmina/imunologia , Histoplasmose/epidemiologia , Histoplasmose/imunologia , Paracoccidioidomicose/epidemiologia , Paracoccidioidomicose/imunologia , Brasil , Brasil/epidemiologia , Histoplasmose/diagnóstico , Testes Intradérmicos , Paracoccidioidomicose/diagnósticoRESUMO
Intradermal tests using histoplasmin and paracoccidioidin antigens were performed in 138 persons from Pereiro, Ceará, Brazil. The results were positive in 61.5% and 32.5% with histoplasmin and paracoccidioidin antigens respectively. These results suggest infection by H. capsulatum and P. brasiliensis in the people living in the studied area. New studies are necessary to detect histoplasmosis and paracoccidioidomycosis as clinical diseases in that region.