René Cruchet (1875-1959) was a pediatrician from Bordeaux known for his seminal description of encephalitis lethargica during World War I, at the same time as Constantin von Economo (1876-1931) in Vienna published his own description, which, unlike Cruchet's description, provided precious anatomopathological data in addition to the clinical data. Cruchet was interested in tics and dystonia and called for treatment using behavioral psychotherapy that was, above all, repressive. Cruchet was also a physiologist and an innovator in aeronautic medicine-notably, he helped pioneer the study of "aviator's disease" during World War I. Moreover, he possessed an encyclopedic knowledge, while publishing in all medical fields, writing philosophical texts as well as travel logs.
Keywords: Dystonia; Gilles de la Tourette’s syndrome; Parkinson’s disease; René Cruchet; history of neurology; tics.