title: The mistakable and the unmistakable.
authors.forename: Timothy H
authors.initials: TH
authors.lastname: McCalmont
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003872:Dermatitis / Q000276:immunology / Q000378:metabolism / Q000473:pathology* / Q000821:virology; D003937:Diagnosis, Differential; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D005499:Folliculitis / Q000276:immunology / Q000378:metabolism / Q000473:pathology* / Q000821:virology; D006566:Herpesviridae Infections / Q000276:immunology / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D008297:Male; D010412:Penile Neoplasms / Q000276:immunology / Q000378:metabolism / Q000473:pathology* / Q000821:virology