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Rev. med. Risaralda ; 18(1): 88-93, jun. 2012.
Article in Spanish | LILACS | ID: lil-649077

ABSTRACT

Introducción: La escabiosis o sarna humana es una dermatosis causada a partir de la infección cutánea por Sarcoptes scabiei. Una variante severa y rara de ella es la escabiosis noruega o costrosa, que ha repuntado en los últimos años por el incremento en patologías que causan inmunosupresión. Clínicamente se presenta con hiperqueratosis y placas costrosas predominantemente en tórax, cabeza, palmas y plantas. Su diagnóstico es sencillo, mediante la observación microscópica del artrópodo. Se ha descrito su tratamiento con permetrina, benzoato de bencilo e ivermectina. Caso: Paciente masculino de 38 años de edad, con antecedente de sarna noruega tratada hace 2 años y hábito alcohólico acentuado. Inicia enfermedad actual hace 2 meses, caracterizada por pápulas pruriginosas generalizadas que aumentaron progresivamente en cantidad, formando placas costrosas. Examen físico: xerosis cutis, placas hiperqueratósicas de variadas formas y tamaños, algunas coalescentes, fácilmente desprendibles, sobre base eritematosa, brillante, rezumante, localizadas en cuello, tronco y extremidades. Examen microscópico: huevos y adultos de Sarcoptes scabiei. Tratamiento: cefazolina, maleato de clorfeniramina, cetirizina, ivermectina. Discusión: La sarna noruega recurrente en un paciente adulto sin patología de base conocida, debe conllevar a la búsqueda de causas que comprometan la respuesta inmune del individuo. Más allá de las patologías médicas y medicamentos con efectos inmunosupresores conocidos, debe también indagarse el consumo habitual sustancias como alcohol, agente con demostradas propiedades supresoras sobre la respuesta inmune innata y adquirida. En este caso, el tratamiento dermatológico debe ser complementado con el manejo adecuado del hábito alcohólico subyacente a la patología del paciente.


Background: Scabies is a dermatosis caused by infection due to Sarcoptes scabiei. An uncommon and severe form of this condition, Norwegian or crusted scabies, has shown an increasing incidence in recent years, due to the growing number of pathologies causing immunosupression. Clinical presentation includes hyperkeratosis and crusted plaques mainly on the skin of the thorax, head, palms and soles. It is easily diagnosed by direct observation of the arhtropode. Permethrin, benzyl benzoate and ivermectin have been described as effective therapeutic resources. Case: A 38-year-old male patient, with previous history of Norwegian scabies treated 2 years ago, and heavy consumption of alcohol is described. Presented illness begins 2 months ago, with the appearance of generalized pruriginous papules which progressively grew into crusted plaques. Physical examination: xerosis cutis, hyperkeratosic plaques in different shapes and sizes, some of them converging, easily removable, on an erytematous, bright, humid base, located on the skin of the neck, torso and limbs. Microscopic examination: eggs and adult forms of Sarcoptes scabiei. Treatment: cefazolin, clorpheniramine, cetirizin, ivermectin. Discussion: Recurrent Norwegian scabies in an adult patient without history of a previous disease, must be a reason to find other causes that jeopardize the individual’s immune response. Besides medical conditions and drugs known to have immunosuppressing effects, habits such as alcohol consumption must be interrogated, for it has been demonstrated that this substance has suppressing effects on innate and acquired immunity. The dermatologic treatment must be complimented with an accurate management of the alcohol abuse which underlies the disease.


Subject(s)
Humans , Alcoholism , Mite Infestations , Sarcoptes scabiei , Dermatology , Venezuela
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