Demyelination is often secondary to an infectious, ischemic, metabolic, or hereditary disorder or to a toxin (eg, alcohol, ethambutol). In primary demyelinating disorders, cause is unknown, but an autoimmune mechanism is suspected because the disorder sometimes follows a viral infection or viral vaccination.
For other uses, see Realm (disambiguation). A realm /ËrÉlm/ is a community or territory over which a sovereign rules; it is commonly used to describe a kingdom or other monarchical or dynastic state. The Old French word reaume, modern French royaume, was the word first adopted in English; the fixed modern spelling does not appear until the beginning of the 17th century.
Example Sentences for realm. In its own realm it is accustomed to play rather than to work. The origins of language, as much as the origins of writing, lie in the realm of the natural. âThe punishment due to my crime is not to be found mentioned in the laws of the realm,â he said. But there are many more that originate in the realm of humanity.