To the Editor.
—Having read Hachinski's brief treatise on "The Upgoing Thumb Sign," in the April 1992 issue of the Archives1 and his suggestion that it is a phenomenon analogous to the "upgoing toe," I respectfully suggest that we also apply an appropriate eponym. From now on, we should refer to the Hachinski-Babinski sign. Really, the rhyme is just too good to resist.
Tamm HS. The Upgoing Thumb: A Sign in Search of a Name. Arch Neurol. 1993;50(3):239. doi:10.1001/archneur.1993.00540030007004
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