Chaddock reflex

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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 CG (2002). "History of the extensor plantar response: Babinski and Chaddock signs". Seminars in neurology 22 (4): 391–8. doi:10.1055/s-2002-36761. PMID 12539060.

Eponymous medical signs – nervous system

CNS

Head, general	Battle's sign Broca aphasia Kernig's sign Macewen's sign Myerson's sign Stroop test Wada test Dix-Hallpike test Hirano body

Multiple sclerosis	Dawson's fingers Lhermitte's sign Charcot's neurologic triad Uhthoff's phenomenon

Other	Romberg's test increased intracranial pressure Cushing's triad Miller Fisher test

PNS

Reflexes of extremities/
corticospinal tract

Combination	Jendrassik maneuver

Lower limb	Babinski sign Chaddock reflex Oppenheim's sign Westphal's sign

Upper limb	Hoffmann's sign

Other torso/limbs

Upper limb	Froment's sign carpal tunnel syndrome Tinel sign Phalen maneuver

Lower limb	Abadie's sign of tabes dorsalis Gowers' sign Hoover's sign Lasègue's sign Trendelenburg's sign

Torso	Beevor's sign

General	Todd's paresis Jolly's test

Mental/behavioral

Russell's sign

M: CNS

anat (n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco (m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug (N1A/2AB/C/3/4/7A/B/C/D)

M: PNS

anat (h/r/t/c/b/l/s/a)/phys (r)/devp/prot/nttr/nttm/ntrp

noco/auto/cong/tumr, sysi/epon, injr

proc, drug (N1B)

M: PSO/PSI

mepr

dsrd (o, p, m, p, a, d, s), sysi/epon, spvo

proc (eval/thrp), drug (N5A/5B/5C/6A/6B/6D)

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