eMedicine Specialties > Dermatology > Environmental
Black Heel (Calcaneal Petechiae)
Updated: Oct 2, 2006
Introduction
Background
Black heel is a self-limited, asymptomatic, trauma-induced darkening of the posterior or posterolateral aspect of the heel that occurs primarily in young adult athletes. It was first described in a group of basketball players in 1961.1 Although clinically insignificant, black heel is important because of its close clinical resemblance to malignant melanoma. A similar lesion termed black palm (tache noir) has been described on the thenar eminence in weightlifters, gymnasts, golfers, tennis players, and mountain climbers.
Pathophysiology
Black heel is caused by a repeated lateral shearing force of the epidermis sliding over the rete pegs of the papillary dermis, resulting in intraepidermal hemorrhage.
Frequency
United States
The exact incidence of black heel is unknown. One study involving 596 19-year-old sports participants revealed an incidence of 2.9%.2 This sports-related dermatosis probably is much more common than has been reported.
Mortality/Morbidity
The lesion of black heel usually is asymptomatic, although both pain and tenderness can occur. The black areas always resolve spontaneously within several months if the traumatic inciting events are discontinued.
Age
Black heel primarily occurs in young adult athletes, but it may appear in persons of any age if the appropriate conditions occur.
Clinical
History
Black heel occurs in adolescents and young adults who participate in sports that involve frequent starts and stops, such as basketball, football, soccer, lacrosse, and racquet sports.
- Patients present with an irregular dark macule over the heel (see Media File 1).
- The lesion usually is asymptomatic and does not inhibit the patient from performing routine daily activities.
- The patient may or may not relate the onset of the lesions to participation in sports.
Physical
Examination reveals a blue-to-black macule or patch ranging in size from a few millimeters to several centimeters in diameter.
- The posterior and posterolateral heel are affected most commonly.
- On close inspection, multiple petechiae are centrally aggregated with a few scattered satellite macules.
- The dyschromia often is in a horizontal distribution; however, both circular and oval lesions may occur.
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References
Crissey JT, Peachy JC. Calcaneal petechiae. Arch Dermatol. Mar 1961;83:501. [Medline].
Rufli T. Hyperkeratosis haemorrhagica. Hautarzt. Nov 1980;31(11):606-9. [Medline].
Akasu R, Sugiyama H, Araki M, Ohtake N, Furue M, Tamaki K. Dermatoscopic and videomicroscopic features of melanocytic plantar nevi. Am J Dermatopathol. Feb 1996;18(1):10-8. [Medline].
Saida T, Oguchi S, Ishihara Y. In vivo observation of magnified features of pigmented lesions on volar skin using video macroscope. Usefulness of epiluminescence techniques in clinical diagnosis. Arch Dermatol. Mar 1995;131(3):298-304. [Medline].
Hafner J, Haenseler E, Ossent P, Burg G, Panizzon RG. Benzidine stain for the histochemical detection of hemoglobin in splinter hemorrhage (subungual hematoma) and black heel. Am J Dermatopathol. Aug 1995;17(4):362-7. [Medline].
Adams BB. Dermatologic disorders of the athlete. Sports Med. 2002;32(5):309-21. [Medline].
Cho KH, Kim YG, Seo KI, Suh DH. Black heel with atypical melanocytic hyperplasia. Clin Exp Dermatol. Sep 1993;18(5):437-40. [Medline].
García-Doval I, de la Torre C, Losada A, Cruces MJ. Disseminated punctate intraepidermal haemorrhage: a widespread counterpart of black heel. Acta Derm Venereol. Sep 1999;79(5):403. [Medline].
Levine N. Dermatologic aspects of sports medicine. J Am Acad Dermatol. Oct 1980;3(4):415-24. [Medline].
Further Reading
Keywords
talon noir, tennis heel, hyperkeratosis haemorrhagica, pseudochromhidrosis plantaris, black heel, calcaneal petechiae
Overview: Black Heel (Calcaneal Petechiae)