Biopsy may appear
The lesion is usually limited to the stratum corneum.
Locatd in skin
This is an example of "invisible dermatosis".
Caused by diptheroid bacilli, Cornybacterium minutissimum. Special stain : Small
coccobacilli are demonstrated by Gram , PAS and methenamine silver
Pitted keratolysis :
Often located on the plantar surface of the feet. Pits appear as
multiple crateriform defect in the stratum corneum.
Filamentous and coccoid organisms are demonstrated by Gram and methenamine silver