“…Weiter kann es zu Tachykardie, Nausea, Erbrechen, Diarrhoe, Kopfschmerzen, Gelenksbeschwerden und Asthma kommen [2,3,7]. Weiter kann es zu Tachykardie, Nausea, Erbrechen, Diarrhoe, Kopfschmerzen, Gelenksbeschwerden und Asthma kommen [2,3,7].…”
Section: Besprechungunclassified
“…In der Regel kommt es innerhalb mehrerer Stunden nach Kontakt mit der Infestationsquelle zu juckenden Hautveränderungen, weshalb eine Sensibilisierung vom Soforttyp vermutet wurde [3,12]. Die Symptome können aber auch erst nach 24 h auftreten [24].…”
Section: Besprechungunclassified
“…Gelegentlich findet sich im Labor eine Eosinophilie [4,7]. Histologisch findet sich eine intradermale Vesikelbildung mit einer oberflächlichen und perivaskulären Entzündung ohne Milbennachweis [3,15].…”
Pyemotes mites, of which the grain itch mite is the most important for human medicine, are ectoparasites of many insect species. Human infestation occurs only accidentally and temporally. The source materials are most often grain, straw and plant-based foods. Bites produce an intensely itching urticarial wheal capped by pin-point vesicles, which often are destroyed by scratching. Pyemotes dermatitis favours the back, the abdomen and the flexor side of the forearms. The mites are barely visible to the naked eye and reside only briefly on humans and thus are not found by physicians during clinical examination. When itching starts, the parasites have usually left their hosts. Therefore it is important to investigate the patient's environment and to identify the infested materials. We describe an outbreak of Pyemotes dermatitis in at least 16 persons, most of them warehouse workers in a hobby mail-order house. Infested decorative wheat was the source of the problem. Successful eradication was achieved by fumigation of the storage facilities with the insecticide methylbromide. Our cases demonstrate the importance of examination of environmental specimens for ectoparasites in cases of unexplained dermatoses. Biological agriculture avoiding insecticides may cause reappearance of this almost forgotten skin disease.
“…Weiter kann es zu Tachykardie, Nausea, Erbrechen, Diarrhoe, Kopfschmerzen, Gelenksbeschwerden und Asthma kommen [2,3,7]. Weiter kann es zu Tachykardie, Nausea, Erbrechen, Diarrhoe, Kopfschmerzen, Gelenksbeschwerden und Asthma kommen [2,3,7].…”
Section: Besprechungunclassified
“…In der Regel kommt es innerhalb mehrerer Stunden nach Kontakt mit der Infestationsquelle zu juckenden Hautveränderungen, weshalb eine Sensibilisierung vom Soforttyp vermutet wurde [3,12]. Die Symptome können aber auch erst nach 24 h auftreten [24].…”
Section: Besprechungunclassified
“…Gelegentlich findet sich im Labor eine Eosinophilie [4,7]. Histologisch findet sich eine intradermale Vesikelbildung mit einer oberflächlichen und perivaskulären Entzündung ohne Milbennachweis [3,15].…”
Pyemotes mites, of which the grain itch mite is the most important for human medicine, are ectoparasites of many insect species. Human infestation occurs only accidentally and temporally. The source materials are most often grain, straw and plant-based foods. Bites produce an intensely itching urticarial wheal capped by pin-point vesicles, which often are destroyed by scratching. Pyemotes dermatitis favours the back, the abdomen and the flexor side of the forearms. The mites are barely visible to the naked eye and reside only briefly on humans and thus are not found by physicians during clinical examination. When itching starts, the parasites have usually left their hosts. Therefore it is important to investigate the patient's environment and to identify the infested materials. We describe an outbreak of Pyemotes dermatitis in at least 16 persons, most of them warehouse workers in a hobby mail-order house. Infested decorative wheat was the source of the problem. Successful eradication was achieved by fumigation of the storage facilities with the insecticide methylbromide. Our cases demonstrate the importance of examination of environmental specimens for ectoparasites in cases of unexplained dermatoses. Biological agriculture avoiding insecticides may cause reappearance of this almost forgotten skin disease.
“…They may be in the bedroom, an adjoining room, on a roof, a gutter or a balcony in the neighbourhood. Sometimes the mites can reach the patient with the help of the wind or an artificial air current or they m ay crawl through cracks in windows or doors [2,4,7].…”
“…The occurrence of rashes on man in contact with Pyemotes species has recently been reviewed by Hewitt et al (1976). The typical skin lesions caused by Pyemotes are wheats capped by pin-point vesicles and have been termed urticovesicular (Booth & Jones, 1954).…”
Summary
An acute outbreak of itchy papules among display artists (window–dressers) was traced to the presence of Pyemotes mites in imported dried ornamental wheat.
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