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 upper motor neuron lesion of the lower limbs.
[citation needed] This sign is named after Paul Robert Bing.
[citation needed] Bing's reflex or sign at Whonamedit?
This medical sign article is a stub.