An acute viral disease of the nervous system in sheep; can be transmitted by Ixodes ricinus WordNet 3.0 & Open English WordNet

Louping-ill is an acute viral disease primarily of sheep that is characterized by a biphasic fever, depression, ataxia, muscular incoordination, tremors, posterior paralysis, coma, and death. Wikipedia

Animal disease Wikidata

An enzootic and often fatal viral disease of sheep and other domestic animals, spread by ticks. It is characterized by muscular tremors and spasms, followed by more or less complete paralysis. The principal lesion is an inflammation of the membranes covering the brain and spinal cord. Wiktionary