Chaddock reflex (sign)

Chaddock reflex (sign)
Chad·dock reflex (sign) (chadґək) [Charles Gilbert Chaddock, American neurologist, 1861–1936] see under reflex.

Medical dictionary. 2011.

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  • Chaddock reflex — is a diagnostic reflex similar to the Babinski reflex. It is designed to identify lesions of the pyramidal tract, via stimulation of the skin over the lateral malleolus. It was identified by Charles Gilbert Chaddock in 1911.[1] References ^ Goetz …   Wikipedia

  • Sign — Any abnormality that indicates a disease process, such as a change in appearance, sensation, or function, that is observed by a physician when evaluating a patient. * * * 1. Any abnormality indicative of disease, discoverable on examination of… …   Medical dictionary

  • Reflex — A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The nasal reflex is a sneeze. * * * 1. An involuntary reaction in response to a stimulus applied to the periphery and transmitted to the… …   Medical dictionary

  • Chaddock — Charles G., U.S. neurologist, 1861–1936. See C. reflex, C. sign …   Medical dictionary

  • Chaddock sign — see under reflex …   Medical dictionary

  • external malleolar sign — Chaddock reflex …   Medical dictionary

  • Charles Gilbert Chaddock — Charles G. Chaddock Charles Gilbert Chaddock (1861 1936) was an American neurologist remembered for describing the Chaddock reflex. Biography Charles Gilbert Chaddock was born in 1861 in Jonesville, Michigan. He qualified in medicine in 1885, and …   Wikipedia

  • Myerson's sign — is a medical condition where a patient is unable to resist blinking when tapped on the glabella, the area above the nose and between the eyebrows. It is often referred to as the glabellar reflex. It is often an early symptom of Parkinson s… …   Wikipedia

  • Tinel sign — Classification and external resources Transverse section across the wrist and digits. (The median nerve is the yellow dot near the center. The carpal tunnel is not labeled, but the circular structure surrounding the median nerve is visible.) IC …   Wikipedia

  • Oppenheim's sign — is dorsiflexion of the big toe elicited by irritation downward of the medial side of the tibia[1] Positive sign indicates a damage to the pyramidal tract. It is named for Hermann Oppenheim.[2][3] References …   Wikipedia

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