Bing's sign

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Bing's sign or Bing's reflex is a clinical sign in which pricking the dorsum of the foot or toe with a pin causes extension of the great toe. It is seen in patients with pyramidal tract lesions of the lower limbs.[1]

This sign is named after Paul Robert Bing.


  1. ^ Barry G. Firkin, Judith A. Whitworth. Dictionary of Medical Eponyms. Informa Health Care, 2001, page 35. ISBN 978-1-85070-333-4.

External links[edit]

Bing's reflex or sign at Who Named It?