title: Perianal orf.
abstract: The parapox viral infection orf is usually diagnosed without difficulty when the lesions have the characteristic morphology and there is an appropriate history of contact with sheep. Two cases of orf in a perineal location in young children are presented to illustrate modification of the physical signs by flexural occluded sites. Electron microscopy of scrapings from the lesions established the diagnosis.
mesh_terms: D001003:Anal Canal; D000818:Animals; D002648:Child; D004474:Ecthyma, Contagious / Q000175:diagnosis* / Q000635:transmission; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012756:Sheep; D012874:Skin Diseases, Infectious / Q000175:diagnosis*; D015047:Zoonoses / Q000635:transmission