Revue Neurologique 2021 Sep;177(7):734-752. A Ducros, S de Gaalon, C Roos, A Donnet, P Giraud, E Guégan-Massardier, M Lantéri-Minet, C Lucas, J Mawet, X Moisset, D Valade, G Demarquay Abstract The French Headache Society proposes updated French guidelines for the