Abstract
The Czech Headache Society committee publishes the official Czech translation of the new International Classification of Headache Disorders (ICHD-3), which was published in the first number of the journal Cephalalgia of the International Headache Society (IHS) in January 2018. In this classification headaches are divided into 4 groups: I.
Primary headaches; II. Secondary headaches; III.
Neuropathies, facial pains and other headaches; and IV. Appendix.
Taking into consideration the extent of the original classification, we do not present further specifying texts, comments, and translation of the Appendix where new subunits of the mentioned groups are presented because they are subjects of the next IHS scientific investigation. Some changes compared to the ICHD-2 original version are pointed out.