Nicholas Nguyen, Author at Clinical Pain Advisor

Nicholas Nguyen

All articles by Nicholas Nguyen

Talon noire (Black heel, calcaneal petechiae, runner’s heel, basketball heel, tennis heel, hyperkeratosis hemorrhagica, pseudochromhidrosis plantaris, chromidrose plantaire, eccrine intracornee, post-traumatic punctuate hemorrhage of the skin, post-traumatic cutaneous intracorneal blood, disseminated punctuate intraepidermal hemorrhage, black palm, playstation thumb, tennis toe)

Are You Confident of the Diagnosis? What you should be alert for in the history Talon noire is an asymptomatic condition of post-traumatic intraepidermal hemorrhage, arising predominantly in the young athlete. It is observed almost exclusively in sports associated with repetitive jumping or abrupt turning of the feet, including basketball, tennis, lacrosse, and football. An…

Piezogenic Pedal Papules (Painful piezogenic pedal papules, piezogenic wrist papules)

Are You Confident of the Diagnosis? What you should be alert for in the history First described by Shelley and Rawnsley in 1968, piezogenic pedal papules are flesh-colored papules which emerge on the heel upon weight bearing. Herniations of subcutaneous fat give rise to these papules. Upon cessation of weight bearing, the papules frequently recede…

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