One would imagine that after hundreds of years of clinical observation the signs of disease would all have been discovered. Such is not the case, for every year new diagnostic signs, and even new diseases are described. Some of these signs, after being tried and found wanting, pass back into the oblivion from which they originally emerged, others stand the test, and become incorporated into the routine of the physician. Among the latter may be mentioned the sign originally described by Babinski in 1898, and now usually referred to as "Babinski's sign" or "the toe phenomenon of Babinski." The phenomenon was originally described by Babinski in the following words: "On the healthy side, the prick of the sole of the foot causes under normal circumstances a flexion of the thigh on the pelvis, of the leg on the thigh, of the foot on the leg, and of the toes on
THE DIAGNOSTIC SIGNIFICANCE OF THE BABINSKI TOE PHENOMENON.. JAMA. 1905;XLIV(24):1933–1934. doi:10.1001/jama.1905.02500510041007
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