Some commonly used terms in the Czech medical environment are not easily found in MedDRA, so we have prepared a table of frequently used terms and abbreviations in the Czech language and an overview of their equivalents in MedDRA for the administrators of the ReMuS registry. The list will be continuously updated and is always available on this page - www.multiplesclerosis.cz/MedDRAcesky. For some terms, we will also try to provide a more appropriate and concise translation.