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Babinski reflex

A foot reflex stimulation to test for MS.

The Babinski Reflex is one of the normal reflexes in infants. However, it is often used to test for MS. The sole of the foot is stroked and the foot either moves downwards or upwards. This upward extension is most likely associated with an issue in the brain or the central nervous system (CNS).

References:
MedicineNet. Medical Definition of Babinski sign. Available at: https://www.medicinenet.com/script/main/art.asp?articlekey=7186 Accessed March 2020