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Revista de otorrinolaringología y cirugía de cabeza y cuello
versión On-line ISSN 0718-4816
PENA M, Alejandro. Dermatitis of the pinna by puncture of the black fly: A different clinical disease not yet described. Rev. Otorrinolaringol. Cir. Cabeza Cuello [online]. 2012, vol.72, n.2, pp.157-162. ISSN 0718-4816. http://dx.doi.org/10.4067/S0718-48162012000200009.
Introduction: Puncture of the black fly or dipteral simuliidae on the external surface of the ear auricle shows clinical characteristics which differ from the puncture of this same insect on other different parts of the body Thus, it requires a different treatment, as well. These facts have not been clinically described yet, therefore, there is no literature available on this topic. Aim: To describe symptoms and signs of this disease.To outline the causes of the clinical differences and medical treatment. Material and method: Study and analysis of six patients suffering from puncture of black fly on the surface of ear auricle are carried out. The biology of these insects is studied. A revision of the histology of the skin of the ear auricle is made Results: The main symptoms experimented by patients suffering from black fly puncture are: excruciating pain and severe edema on the auricle area. The pain even prevents them from sleeping. The main cause of these symptoms is that the skin on the external surface of the auricle is firmly attaches to the underlying cartilage. Besides, the countless toxins inoculated in the saliva of the fly contain not only anticoagulant agents but also produce vasodilatation of capillaries and inhibit cellular immunity. Conclusions: The black fly plague and its infectious and painful puncture will be on the increase in Chile due to: global warming; elimination of the natural predators of this insect; man induced pollution of the majority of lakes and rivers in the country. The medical treatment for black fly puncture indicates corticosteroids in high dose for a short period of time (under a week).
Palabras clave : Black fly; black fly puncture; diptera simuliidae puncture.