In this paper the author recounts an anecdote presented by Galen of Pe
rgamum (circa 130-200 A.D.) about a sophist named Pausanias, who fell
from his mount and struck his back against a rock. The patient develop
ed a subsequent loss of sensation in the fingers of his left hand with
complete sparing of motor function. Numerous medications were applied
to his hand but to no avail. Galen stated that he applied the same me
dications to the original point of dorsal tenderness, resulting in the
patient's dramatic and full recovery. Galen attributed the healing to
local drug action at the site of a presumed spinal root injury, at th
e level of C-7. Galen repeated this anecdote elsewhere to illustrate t
he remote effects of spinal cord and nerve injury and the importance o
f treating the site of pathology, rather than its somatic manifestatio
ns. Galen's observation is interpreted in light of his earlier experim
ents on spinal cord and nerve transections in live animals and his evo
lving concepts of functional and correlative neuroanatomy. This anecdo
te is also discussed as a striking example of the dangers of conjectur
e and the temptation to confuse association with causation when interp
reting the effects of therapy in light of widely accepted paradigms.