| Name of the Society | Tsotne Chkhikvishvili Georgian Headache Society |
| Date of Foundation | Refounded in 16 Jun 2017 |
| Website | Facebook/Georgian Headache Society |
| Journal | |
| President of the Society | George Gegelashvili |
| Affiliation | |
| gegelashvili@gmail.com | |
| Representative of the Society | Zaza Katsarava |
| Affiliation | |
| zaza.katsarava@gmail.com | |
| Update 2018 |
| Name of the Society | German Migraine and Headache Society Deutsche Migräne- und Kopfschmerzgesellschaft (DMKG) |
| Date of Foundation | 1979 |
| Website | www.dmkg.de |
| Journal | Nervenheilkunde |
| President of the Society | PD Dr. Tim Jürgens |
| Affiliation | DKMG Klinikum Güstrow, Klinik für Neurologie |
| T.Juergens@kmg-kliniken.de | |
| Representative of the Society | Priv.-Doz. Dr. med. Charly Gaul |
| Affiliation | Kopfschmerzzentrum Frankfurt |
| info@dmkg.de | |
| Update 2021 |
| Name of the Society | Hellenic Headache Society |
| Date of Foundation | 1991 |
| Website | http://www.kefalalgia.gr |
| Journal | |
| President of the Society | Prof. Dimos Mitsikostas |
| Affiliation | Aeginition Hospital, Neurology Dept. National & Kapodistrian Un. of Athens |
| dmitsikostas@med.uoa.gr | |
| Representative of the Society | Dr. Evangelos Kouremenos |
| Affiliation | Neurologist, Airforce 251 General Hospital |
| vkoure@otenet.gr | |
| Update 2022 |