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To the Editor.—
I should like to add my own experience to that of Drs. Ayres and Mihan, whose paper appeared in the Archives (106:262, 1972).I presented two schoolboys aged 15 and 16 years who had black heels at a Meeting of the Dermatology Section of the Royal Society of Medicine in London in May 1969. Both boys had well-defined areas showing the typical patches consisting of black spots over the medial aspect of both heels just above the soles.Black heel is a common traumatic condition occurring in the 12- to 22-year age group, any many sufferers do not bother to seek medical advice. The black color is due to pigment derived from blood. Much of this pigment seems to be within sweat ducts in the stratum corneum on histological examination, but how the altered blood gets into the ducts is not clear.Both the kind of
Verbov J. Calcaneal Petechiae. Arch Dermatol. 1973;107(6):918. doi:10.1001/archderm.1973.01620210078027