title: Black heel, talon noir or calcaneal petechiae?
abstract: We describe a series of six patients with superficial cutaneous haemorrhages of the feet, including a classical case of black heel (talon noir) and other similar cases with diverse clinical presentations that do not match the typical description of that process. The main differences lay in production mechanism, morphology and location. The causes of these 'atypical' lesions were: burns with hot sand, friction against the rough edge of a swimming pool, wearing new shoes, jogging, or pricking a blister with a needle. Clinically, they consisted of isolated or multiple, small, large or linear, brown or black lesions located in areas that did not include the convex part of the heel, in which talon noir usually appears; on the contrary, the lesions affected the back third of the soles, the toes, periungual fold and plantar arch. As the presence of blood in the horny layer was a common final factor in all these cases, a better name for this process would be 'post-traumatic cutaneous intracorneal blood' to describe black heel and its diverse clinical presentations.
authors.affiliation: Cátedra de Dermatología, Escuela de Medicina, Universidad Andrés Bello, Chile. fcourbina@hotmail.com
authors.forename: Francisco
authors.initials: F
authors.lastname: Urbina
authors.forename: Lorena
authors.initials: L
authors.lastname: León
authors.forename: Emilio
authors.initials: E
authors.lastname: Sudy
mesh_terms: D000293:Adolescent; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D005533:Foot Dermatoses / Q000209:etiology*; D006365:Heel; D006470:Hemorrhage / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011693:Purpura / Q000209:etiology*